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Whakaoti mō x
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x^{2}+2x+1=x^{2}+7^{2}
Whakamahia te ture huarua \left(a+b\right)^{2}=a^{2}+2ab+b^{2} hei whakaroha \left(x+1\right)^{2}.
x^{2}+2x+1=x^{2}+49
Tātaihia te 7 mā te pū o 2, kia riro ko 49.
x^{2}+2x+1-x^{2}=49
Tangohia te x^{2} mai i ngā taha e rua.
2x+1=49
Pahekotia te x^{2} me -x^{2}, ka 0.
2x=49-1
Tangohia te 1 mai i ngā taha e rua.
2x=48
Tangohia te 1 i te 49, ka 48.
x=\frac{48}{2}
Whakawehea ngā taha e rua ki te 2.
x=24
Whakawehea te 48 ki te 2, kia riro ko 24.