Issolvi -2x*(1.5x-4)+(4x-1)*(-x+8)=

$$- 2 x \cdot ( 1.5 x - 4 ) + ( 4 x - 1 ) \cdot ( - x + 8 ) =$$

Evalwa

$$-7x^{2}+41x-8$$

Passi tas-Soluzzjonijiet

Uża l-propjetà distributtiva biex timmultiplika -2x b'1.5x-4.

$$-3x^{2}+8x+\left(4x-1\right)\left(-x+8\right)$$

Applika l-propjetà distributtiva billi timmultiplika kull terminu ta' 4x-1 b'kull terminu ta' -x+8.

$$-3x^{2}+8x+4x\left(-x\right)+32x-\left(-x\right)-8$$

Immultiplika -1 u -1 biex tikseb 1.

$$-3x^{2}+8x+4x\left(-x\right)+32x+x-8$$

Ikkombina 32x u x biex tikseb 33x.

$$-3x^{2}+8x+4x\left(-x\right)+33x-8$$

Ikkombina 8x u 33x biex tikseb 41x.

$$-3x^{2}+41x+4x\left(-x\right)-8$$

Immultiplika x u x biex tikseb x^{2}.

$$-3x^{2}+41x+4x^{2}\left(-1\right)-8$$

Immultiplika 4 u -1 biex tikseb -4.

$$-3x^{2}+41x-4x^{2}-8$$

Ikkombina -3x^{2} u -4x^{2} biex tikseb -7x^{2}.

$$-7x^{2}+41x-8$$

Espandi

$$-7x^{2}+41x-8$$

Passi tas-Soluzzjonijiet

Uża l-propjetà distributtiva biex timmultiplika -2x b'1.5x-4.

$$-3x^{2}+8x+\left(4x-1\right)\left(-x+8\right)$$

Applika l-propjetà distributtiva billi timmultiplika kull terminu ta' 4x-1 b'kull terminu ta' -x+8.

$$-3x^{2}+8x+4x\left(-x\right)+32x-\left(-x\right)-8$$

Immultiplika -1 u -1 biex tikseb 1.

$$-3x^{2}+8x+4x\left(-x\right)+32x+x-8$$

Ikkombina 32x u x biex tikseb 33x.

$$-3x^{2}+8x+4x\left(-x\right)+33x-8$$

Ikkombina 8x u 33x biex tikseb 41x.

$$-3x^{2}+41x+4x\left(-x\right)-8$$

Immultiplika x u x biex tikseb x^{2}.

$$-3x^{2}+41x+4x^{2}\left(-1\right)-8$$

Immultiplika 4 u -1 biex tikseb -4.

$$-3x^{2}+41x-4x^{2}-8$$

Ikkombina -3x^{2} u -4x^{2} biex tikseb -7x^{2}.

$$-7x^{2}+41x-8$$