Issolvi -x(x-7.2)(x-15.6)

$$- x ( x - 7.2 ) ( x - 15.6 )$$

Evalwa

$$-x\left(x-15.6\right)\left(x-7.2\right)$$

Passi tas-Soluzzjonijiet

Uża l-propjetà distributtiva biex timmultiplika -x b'x-7.2.

$$\left(\left(-x\right)x-7.2\left(-x\right)\right)\left(x-15.6\right)$$

Immultiplika -7.2 u -1 biex tikseb 7.2.

$$\left(\left(-x\right)x+7.2x\right)\left(x-15.6\right)$$

Applika l-propjetà distributtiva billi timmultiplika kull terminu ta' \left(-x\right)x+7.2x b'kull terminu ta' x-15.6.

$$\left(-x\right)x^{2}-15.6\left(-x\right)x+7.2x^{2}-112.32x$$

Immultiplika -15.6 u -1 biex tikseb 15.6.

$$\left(-x\right)x^{2}+15.6xx+7.2x^{2}-112.32x$$

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

$$\left(-x\right)x^{2}+15.6x^{2}+7.2x^{2}-112.32x$$

Ikkombina 15.6x^{2} u 7.2x^{2} biex tikseb 22.8x^{2}.

$$\left(-x\right)x^{2}+22.8x^{2}-112.32x$$

Biex timmultiplika l-qawwa tal-istess bażi, żid l-esponenti tagħhom. Żid 1 u 2 biex tikseb 3.

$$-x^{3}+22.8x^{2}-112.32x$$

Espandi

$$-\left(x^{3}-\frac{114x^{2}}{5}+\frac{2808x}{25}\right)$$

Passi tas-Soluzzjonijiet

Uża l-propjetà distributtiva biex timmultiplika -x b'x-7.2.

$$\left(\left(-x\right)x-7.2\left(-x\right)\right)\left(x-15.6\right)$$

Immultiplika -7.2 u -1 biex tikseb 7.2.

$$\left(\left(-x\right)x+7.2x\right)\left(x-15.6\right)$$

Applika l-propjetà distributtiva billi timmultiplika kull terminu ta' \left(-x\right)x+7.2x b'kull terminu ta' x-15.6.

$$\left(-x\right)x^{2}-15.6\left(-x\right)x+7.2x^{2}-112.32x$$

Immultiplika -15.6 u -1 biex tikseb 15.6.

$$\left(-x\right)x^{2}+15.6xx+7.2x^{2}-112.32x$$

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

$$\left(-x\right)x^{2}+15.6x^{2}+7.2x^{2}-112.32x$$

Ikkombina 15.6x^{2} u 7.2x^{2} biex tikseb 22.8x^{2}.

$$\left(-x\right)x^{2}+22.8x^{2}-112.32x$$

Biex timmultiplika l-qawwa tal-istess bażi, żid l-esponenti tagħhom. Żid 1 u 2 biex tikseb 3.

$$-x^{3}+22.8x^{2}-112.32x$$