Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
-2x+15=9
Pūruatia ngā taha e rua o te whārite.
-2x+15-15=9-15
Me tango 15 mai i ngā taha e rua o te whārite.
-2x=9-15
Mā te tango i te 15 i a ia ake anō ka toe ko te 0.
-2x=-6
Tango 15 mai i 9.
\frac{-2x}{-2}=-\frac{6}{-2}
Whakawehea ngā taha e rua ki te -2.
x=-\frac{6}{-2}
Mā te whakawehe ki te -2 ka wetekia te whakareanga ki te -2.
x=3
Whakawehe -6 ki te -2.
Ngā Tauira
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Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}