Whakaoti i te (2a+4)(a-3)-(2a+4)(2a-1)

$$( 2 a + 4 ) ( a - 3 ) - ( 2 a + 4 ) ( 2 a - 1 )$$

Aromātai

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

Ngā Upane Otinga

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 2a+4 ki ia tau o a-3.

$$2a^{2}-6a+4a-12-\left(2a+4\right)\left(2a-1\right)$$

Pahekotia te -6a me 4a, ka -2a.

$$2a^{2}-2a-12-\left(2a+4\right)\left(2a-1\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 2a+4 ki ia tau o 2a-1.

$$2a^{2}-2a-12-\left(4a^{2}-2a+8a-4\right)$$

Pahekotia te -2a me 8a, ka 6a.

$$2a^{2}-2a-12-\left(4a^{2}+6a-4\right)$$

Hei kimi i te tauaro o 4a^{2}+6a-4, kimihia te tauaro o ia taurangi.

$$2a^{2}-2a-12-4a^{2}-6a-\left(-4\right)$$

Ko te tauaro o -4 ko 4.

$$2a^{2}-2a-12-4a^{2}-6a+4$$

Pahekotia te 2a^{2} me -4a^{2}, ka -2a^{2}.

$$-2a^{2}-2a-12-6a+4$$

Pahekotia te -2a me -6a, ka -8a.

$$-2a^{2}-8a-12+4$$

Tāpirihia te -12 ki te 4, ka -8.

$$-2a^{2}-8a-8$$

Whakaroha

$$-2a^{2}-8a-8$$

Ngā Upane Otinga

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 2a+4 ki ia tau o a-3.

$$2a^{2}-6a+4a-12-\left(2a+4\right)\left(2a-1\right)$$

Pahekotia te -6a me 4a, ka -2a.

$$2a^{2}-2a-12-\left(2a+4\right)\left(2a-1\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 2a+4 ki ia tau o 2a-1.

$$2a^{2}-2a-12-\left(4a^{2}-2a+8a-4\right)$$

Pahekotia te -2a me 8a, ka 6a.

$$2a^{2}-2a-12-\left(4a^{2}+6a-4\right)$$

Hei kimi i te tauaro o 4a^{2}+6a-4, kimihia te tauaro o ia taurangi.

$$2a^{2}-2a-12-4a^{2}-6a-\left(-4\right)$$

Ko te tauaro o -4 ko 4.

$$2a^{2}-2a-12-4a^{2}-6a+4$$

Pahekotia te 2a^{2} me -4a^{2}, ka -2a^{2}.

$$-2a^{2}-2a-12-6a+4$$

Pahekotia te -2a me -6a, ka -8a.

$$-2a^{2}-8a-12+4$$

Tāpirihia te -12 ki te 4, ka -8.

$$-2a^{2}-8a-8$$