Whakaoti i te -x(x-7.2)(x-15.6)

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

Aromātai

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

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te -x ki te x-7.2.

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

Whakareatia te -7.2 ki te -1, ka 7.2.

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

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o \left(-x\right)x+7.2x ki ia tau o x-15.6.

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

Whakareatia te -15.6 ki te -1, ka 15.6.

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

Whakareatia te x ki te x, ka x^{2}.

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

Pahekotia te 15.6x^{2} me 7.2x^{2}, ka 22.8x^{2}.

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

Hei whakarea i ngā pū o te pūtake kotahi, me tāpiri ō rātou taupū. Tāpiria te 1 me te 2 kia riro ai te 3.

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

Whakaroha

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

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te -x ki te x-7.2.

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

Whakareatia te -7.2 ki te -1, ka 7.2.

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

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o \left(-x\right)x+7.2x ki ia tau o x-15.6.

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

Whakareatia te -15.6 ki te -1, ka 15.6.

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

Whakareatia te x ki te x, ka x^{2}.

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

Pahekotia te 15.6x^{2} me 7.2x^{2}, ka 22.8x^{2}.

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

Hei whakarea i ngā pū o te pūtake kotahi, me tāpiri ō rātou taupū. Tāpiria te 1 me te 2 kia riro ai te 3.

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