Enrhifo
\left(-3x-2y\right)\left(3x+4y\right)
Ehangu
-9x^{2}-18xy-8y^{2}
Rhannu
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y^{2}-9\left(x^{2}+2xy+y^{2}\right)
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+y\right)^{2}.
y^{2}-9x^{2}-18xy-9y^{2}
Defnyddio’r briodwedd ddosbarthu i luosi -9 â x^{2}+2xy+y^{2}.
-8y^{2}-9x^{2}-18xy
Cyfuno y^{2} a -9y^{2} i gael -8y^{2}.
y^{2}-9\left(x^{2}+2xy+y^{2}\right)
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+y\right)^{2}.
y^{2}-9x^{2}-18xy-9y^{2}
Defnyddio’r briodwedd ddosbarthu i luosi -9 â x^{2}+2xy+y^{2}.
-8y^{2}-9x^{2}-18xy
Cyfuno y^{2} a -9y^{2} i gael -8y^{2}.
Enghreifftiau
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Terfynau
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}