Whakaoti mō x
x=1
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Tohaina
Kua tāruatia ki te papatopenga
4-4x+x^{2}=x^{2}
Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(2-x\right)^{2}.
4-4x+x^{2}-x^{2}=0
Tangohia te x^{2} mai i ngā taha e rua.
4-4x=0
Pahekotia te x^{2} me -x^{2}, ka 0.
-4x=-4
Tangohia te 4 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
x=\frac{-4}{-4}
Whakawehea ngā taha e rua ki te -4.
x=1
Whakawehea te -4 ki te -4, kia riro ko 1.
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