Whakaoti i te (x-1)(x+2)-(x-2)(x+1)-(2x-33)

$$(x-1)(x+2)-(x-2)(x+1)-(2x-33)$$

Aromātai

$$33$$

Ngā Upane Otinga

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o x-1 ki ia tau o x+2.

$$x^{2}+2x-x-2-\left(x-2\right)\left(x+1\right)-\left(2x-33\right)$$

Pahekotia te 2x me -x, ka x.

$$x^{2}+x-2-\left(x-2\right)\left(x+1\right)-\left(2x-33\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o x-2 ki ia tau o x+1.

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

Pahekotia te x me -2x, ka -x.

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

Hei kimi i te tauaro o x^{2}-x-2, kimihia te tauaro o ia taurangi.

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

Ko te tauaro o -x ko x.

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

Ko te tauaro o -2 ko 2.

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

Pahekotia te x^{2} me -x^{2}, ka 0.

$$x-2+x+2-\left(2x-33\right)$$

Pahekotia te x me x, ka 2x.

$$2x-2+2-\left(2x-33\right)$$

Tāpirihia te -2 ki te 2, ka 0.

$$2x-\left(2x-33\right)$$

Hei kimi i te tauaro o 2x-33, kimihia te tauaro o ia taurangi.

$$2x-2x-\left(-33\right)$$

Ko te tauaro o -33 ko 33.

$$2x-2x+33$$

Pahekotia te 2x me -2x, ka 0.

$$33$$

Tauwehe

$$3\times 11$$