Issolvi left(x+yright)^2-2(x+y)

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

Evalwa

$$\left(x+y\right)\left(x+y-2\right)$$

Passi tas-Soluzzjonijiet

Uża teorema binomjali \left(a+b\right)^{2}=a^{2}+2ab+b^{2} biex tespandi \left(x+y\right)^{2}.

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

Uża l-propjetà distributtiva biex timmultiplika -2 b'x+y.

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

Espandi

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

Passi tas-Soluzzjonijiet

Uża teorema binomjali \left(a+b\right)^{2}=a^{2}+2ab+b^{2} biex tespandi \left(x+y\right)^{2}.

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

Uża l-propjetà distributtiva biex timmultiplika -2 b'x+y.

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