Whakaoti mō x
x=1
Graph
Tohaina
Kua tāruatia ki te papatopenga
4x^{2}+7x-2x\left(2x-5\right)=17
Whakareatia te -1 ki te 2, ka -2.
4x^{2}+7x-4x^{2}+10x=17
Whakamahia te āhuatanga tohatoha hei whakarea te -2x ki te 2x-5.
7x+10x=17
Pahekotia te 4x^{2} me -4x^{2}, ka 0.
17x=17
Pahekotia te 7x me 10x, ka 17x.
x=\frac{17}{17}
Whakawehea ngā taha e rua ki te 17.
x=1
Whakawehea te 17 ki te 17, kia riro ko 1.
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