Whakaoti mō x
x=-7
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x-x^{2}+18=-x^{2}-3
Whakamahia te āhuatanga tuaritanga hei whakarea te x+3 ki te 6-x ka whakakotahi i ngā kupu rite.
3x-x^{2}+18+x^{2}=-3
Me tāpiri te x^{2} ki ngā taha e rua.
3x+18=-3
Pahekotia te -x^{2} me x^{2}, ka 0.
3x=-3-18
Tangohia te 18 mai i ngā taha e rua.
3x=-21
Tangohia te 18 i te -3, ka -21.
x=\frac{-21}{3}
Whakawehea ngā taha e rua ki te 3.
x=-7
Whakawehea te -21 ki te 3, kia riro ko -7.
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