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Kumboniso wokugqibezela isikwere bendihla ndisithi
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i'quadratic equation" kukugqibezela isikwere
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ngokwendlela emfutshane yokugqibezela isikwere.
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kwaye bendiphantsi kocaciso ukuba bendiyenzile lento
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yokungqina kwangaphambili kodwa ngoku ndiyakhumbula khange ndiyenze.
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Ngoko ke mandingqinisise i'quadratic equation" kuwe, ngoku
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gqibezela isikwere.
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Ngoko ke masithi ndine 'quadratic equation".
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Ndiyathekelela ukuba i"quadratic equation" yiyo gqo lento ufuna
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ukuyisombulula, kwaye lento abantu abaninzi bayibiza ukuba yi"quadratic equation" yiyo
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gqo, sisichazi se "quadratic'
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Kodwa ngenye indlela andifumi ukufumaneka ngokudlala ngama gama
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Kodwa masithi ndithi lanto ndine "quadratic equation' lanto
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ithi 'ax' ophindwe kabini dibanisa 'bx' dibanisa 'c' ufumana u0.
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kwaye masigqibezele isikwere apha.
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Ngoko ke, siynza njani lonto?
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Kulungile masithabatha u'c' macala ukuze sifumane u-'ax' ophindwe kabini dibnisa
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u-'bx' ilingana no thabatha 'c'.
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Kwaye ngolohlobo masithi ngokugqibezela isikwere kulombniso
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Andithandi ukuba neliqabane apha.
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Ndiyathanda ukuba nelinye kwisimeli sam u'x' ophindwe kabini
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ngoko ke mandahlule yonke lanto ngo 'a'.
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ngoko ke ndifumana u-'x' ophindwe kabini dibanisa 'b/a' ilingana no--kufuneka
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wahlule macala ngo 'a'--thabatha 'c/a'.
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Ngoku sikulungele ukugqibezela isikwere.
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Bekuyintoni ukugqibezela isikwere?
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Kulungile ngenye indlela kukudibanisa izinto zalendlela ukuze
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ibe ngendlela ephindwe kabini
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yalenxaki.
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Ndithetha ukuthini?
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Kulungile, ndizakuyenza ecaleni apha.
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Ukuba ndikuxelela ukuba 'x' dibanisa 'a' ophindwe kabini, lanto ilingana
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'x' ophindwe kabini dibanisa '2ax' ohpndindwe kabini, kunjalo?
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Ngoko ke ukuba ndingadibanisa into apha ukuze lento ikwicala lasekhohlo
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lalenxaki ingabanje, kwangoko ndinga
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phuma ngenye indlela.
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Ndingathi lento izakuba ngu 'x' dibanisa lonto uyiphinde kabini.
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Ngoko ke, kuzakufuneka ndidibise ntoni macala?
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Ukuba ubuwubukele umboniso wogqityezelo lwesikwere lento ifanele
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ngethemba ibe yingeniso kuwe.
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Into ukufanele uyayithetha kukuthi, kulungile lento 'b/a', lento iyahambelana no
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'2a' osisimeli, ngoko ke 'a' uzakuba licala lalento, uzakuba
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licala lalomlingani.
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Lowo izakuba ngu 'a'.
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Kwaye kwangoko into endidinga ukuyidibanisa ngu 'a' ophindwe kabini.
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Ngoko ke ndidinga ukuthatha icala lalento kwaye kwangoko ndiliphinde kabini kwaye
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kwangoko ndidibanise macla omabini.
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Mandiyenze lonto ngombalal owahlukileyo.
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Mandiyenze ngaledayi ibomvu.
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Ngoko ke ndizakuthatha icala lalento--ndiyaqgibezela
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isikwere, yiyo qha into endiyenzayo, okho milingo apha--ngoko ke
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dibanisa icala lalento.
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Kulungile icala lalanto ngu-'b/2a" kunjalo?
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Uvela uphinda-phinde ngo 1/2.
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Kwaye kuzakufuneka ndiyiphinde kabibini.
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Kulungile, ukuba ndiyenzile kwicala lasekhohlo lalenxaki, kufuneka
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ndiyenze nakwicala lasekunene.
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Ngoko ke dibanisa 'b/2a' ophindwe kabini.
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Kwaye ngoku ndinelicala lasekhohlo lalenxaki
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lingololuhlobo liphindekabini ngu
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'x' dibnisa lonto.
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Kwaye, ngubani?
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Kulungile lanto ilingana no--mandicime imibala kwakhona--ngubani
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lilingana nabani icala lasekhohlo lalenxaki?
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Kwaye ungasebenzisa lomfuziselo kwaye uye kwicala lasekhohlo.
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Ngu 'x' dibanisa bani/
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Kulungile sithe 'a', ungenza ngenye yezindlela zimbini. 'a' ngu 1/2 walo
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mlingani oaknye 'a' yingcambu walomlingni okanye
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kuba singakhange siyiphinda-phinde siyayazi lento
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ngu 'a'. 'b/2a' ngu 'a'.
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Ngoko ke lento iyafana no 'x' dibanisa 'b' ngaphezu kuka '2a' yonke lanto
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uyiphinde kabini, kwaye kwangoko ilingana --
Khan Academy
