Issolvi 7(x+3)+2x(x-5)-2(x-1)-2x^2

$$7 ( x + 3 ) + 2 x ( x - 5 ) - 2 ( x - 1 ) - 2 x ^ { 2 }$$

Evalwa

$$23-5x$$

Passi tas-Soluzzjonijiet

Uża l-propjetà distributtiva biex timmultiplika 7 b'x+3.

$$7x+21+2x\left(x-5\right)-2\left(x-1\right)-2x^{2}$$

Uża l-propjetà distributtiva biex timmultiplika 2x b'x-5.

$$7x+21+2x^{2}-10x-2\left(x-1\right)-2x^{2}$$

Ikkombina 7x u -10x biex tikseb -3x.

$$-3x+21+2x^{2}-2\left(x-1\right)-2x^{2}$$

Uża l-propjetà distributtiva biex timmultiplika -2 b'x-1.

$$-3x+21+2x^{2}-2x+2-2x^{2}$$

Ikkombina -3x u -2x biex tikseb -5x.

$$-5x+21+2x^{2}+2-2x^{2}$$

Żid 21 u 2 biex tikseb 23.

$$-5x+23+2x^{2}-2x^{2}$$

Ikkombina 2x^{2} u -2x^{2} biex tikseb 0.

$$-5x+23$$

Espandi

$$23-5x$$

Passi tas-Soluzzjonijiet

Uża l-propjetà distributtiva biex timmultiplika 7 b'x+3.

$$7x+21+2x\left(x-5\right)-2\left(x-1\right)-2x^{2}$$

Uża l-propjetà distributtiva biex timmultiplika 2x b'x-5.

$$7x+21+2x^{2}-10x-2\left(x-1\right)-2x^{2}$$

Ikkombina 7x u -10x biex tikseb -3x.

$$-3x+21+2x^{2}-2\left(x-1\right)-2x^{2}$$

Uża l-propjetà distributtiva biex timmultiplika -2 b'x-1.

$$-3x+21+2x^{2}-2x+2-2x^{2}$$

Ikkombina -3x u -2x biex tikseb -5x.

$$-5x+21+2x^{2}+2-2x^{2}$$

Żid 21 u 2 biex tikseb 23.

$$-5x+23+2x^{2}-2x^{2}$$

Ikkombina 2x^{2} u -2x^{2} biex tikseb 0.

$$-5x+23$$