Whakaoti mō b
b=-a+\frac{30}{a}
a\neq 0
Whakaoti mō a
a=\frac{\sqrt{b^{2}+120}-b}{2}
a=\frac{-\sqrt{b^{2}+120}-b}{2}
Pātaitai
Algebra
a ^ { 2 } + a b = 30
Tohaina
Kua tāruatia ki te papatopenga
ab=30-a^{2}
Tangohia te a^{2} mai i ngā taha e rua.
\frac{ab}{a}=\frac{30-a^{2}}{a}
Whakawehea ngā taha e rua ki te a.
b=\frac{30-a^{2}}{a}
Mā te whakawehe ki te a ka wetekia te whakareanga ki te a.
b=-a+\frac{30}{a}
Whakawehe 30-a^{2} ki te a.
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