Lahenda 25left(x-yright)^2-9left(x+yright)^2

$$25 { \left(x-y \right) }^{ 2 } -9 { \left(x+y \right) }^{ 2 }$$

Arvuta

$$4\left(x-4y\right)\left(4x-y\right)$$

Lahenduse etapid

Kasutage kaksliikme \left(x-y\right)^{2} arendamiseks binoomvalemit \left(a-b\right)^{2}=a^{2}-2ab+b^{2}.

$$25\left(x^{2}-2xy+y^{2}\right)-9\left(x+y\right)^{2}$$

Kasutage distributiivsusomadust, et korrutada 25 ja x^{2}-2xy+y^{2}.

$$25x^{2}-50xy+25y^{2}-9\left(x+y\right)^{2}$$

Kasutage kaksliikme \left(x+y\right)^{2} arendamiseks binoomvalemit \left(a+b\right)^{2}=a^{2}+2ab+b^{2}.

$$25x^{2}-50xy+25y^{2}-9\left(x^{2}+2xy+y^{2}\right)$$

Kasutage distributiivsusomadust, et korrutada -9 ja x^{2}+2xy+y^{2}.

$$25x^{2}-50xy+25y^{2}-9x^{2}-18xy-9y^{2}$$

Kombineerige 25x^{2} ja -9x^{2}, et leida 16x^{2}.

$$16x^{2}-50xy+25y^{2}-18xy-9y^{2}$$

Kombineerige -50xy ja -18xy, et leida -68xy.

$$16x^{2}-68xy+25y^{2}-9y^{2}$$

Kombineerige 25y^{2} ja -9y^{2}, et leida 16y^{2}.

$$16x^{2}-68xy+16y^{2}$$

Laienda

$$16x^{2}-68xy+16y^{2}$$

Lahenduse etapid

Kasutage kaksliikme \left(x-y\right)^{2} arendamiseks binoomvalemit \left(a-b\right)^{2}=a^{2}-2ab+b^{2}.

$$25\left(x^{2}-2xy+y^{2}\right)-9\left(x+y\right)^{2}$$

Kasutage distributiivsusomadust, et korrutada 25 ja x^{2}-2xy+y^{2}.

$$25x^{2}-50xy+25y^{2}-9\left(x+y\right)^{2}$$

Kasutage kaksliikme \left(x+y\right)^{2} arendamiseks binoomvalemit \left(a+b\right)^{2}=a^{2}+2ab+b^{2}.

$$25x^{2}-50xy+25y^{2}-9\left(x^{2}+2xy+y^{2}\right)$$

Kasutage distributiivsusomadust, et korrutada -9 ja x^{2}+2xy+y^{2}.

$$25x^{2}-50xy+25y^{2}-9x^{2}-18xy-9y^{2}$$

Kombineerige 25x^{2} ja -9x^{2}, et leida 16x^{2}.

$$16x^{2}-50xy+25y^{2}-18xy-9y^{2}$$

Kombineerige -50xy ja -18xy, et leida -68xy.

$$16x^{2}-68xy+25y^{2}-9y^{2}$$

Kombineerige 25y^{2} ja -9y^{2}, et leida 16y^{2}.

$$16x^{2}-68xy+16y^{2}$$