Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
3+6x-12=2x-3\left(5-2x\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 6 ki te x-2.
-9+6x=2x-3\left(5-2x\right)
Tangohia te 12 i te 3, ka -9.
-9+6x=2x-15+6x
Whakamahia te āhuatanga tohatoha hei whakarea te -3 ki te 5-2x.
-9+6x=8x-15
Pahekotia te 2x me 6x, ka 8x.
-9+6x-8x=-15
Tangohia te 8x mai i ngā taha e rua.
-9-2x=-15
Pahekotia te 6x me -8x, ka -2x.
-2x=-15+9
Me tāpiri te 9 ki ngā taha e rua.
-2x=-6
Tāpirihia te -15 ki te 9, ka -6.
x=\frac{-6}{-2}
Whakawehea ngā taha e rua ki te -2.
x=3
Whakawehea te -6 ki te -2, kia riro ko 3.
Ngā Tauira
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Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}