Whakaoti i te 4x-y(7x+4y)-(2x+8y)(2x+5y)

$$4 x - y ( 7 x + 4 y ) - ( 2 x + 8 y ) ( 2 x + 5 y )$$

Aromātai

$$4x-44y^{2}-33xy-4x^{2}$$

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te y ki te 7x+4y.

$$4x-\left(7yx+4y^{2}\right)-\left(2x+8y\right)\left(2x+5y\right)$$

Hei kimi i te tauaro o 7yx+4y^{2}, kimihia te tauaro o ia taurangi.

$$4x-7yx-4y^{2}-\left(2x+8y\right)\left(2x+5y\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 2x+8y ki ia tau o 2x+5y.

$$4x-7yx-4y^{2}-\left(4x^{2}+10xy+16yx+40y^{2}\right)$$

Pahekotia te 10xy me 16yx, ka 26xy.

$$4x-7yx-4y^{2}-\left(4x^{2}+26xy+40y^{2}\right)$$

Hei kimi i te tauaro o 4x^{2}+26xy+40y^{2}, kimihia te tauaro o ia taurangi.

$$4x-7yx-4y^{2}-4x^{2}-26xy-40y^{2}$$

Pahekotia te -7yx me -26xy, ka -33yx.

$$4x-33yx-4y^{2}-4x^{2}-40y^{2}$$

Pahekotia te -4y^{2} me -40y^{2}, ka -44y^{2}.

$$4x-33yx-44y^{2}-4x^{2}$$

Whakaroha

$$4x-44y^{2}-33xy-4x^{2}$$

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te y ki te 7x+4y.

$$4x-\left(7yx+4y^{2}\right)-\left(2x+8y\right)\left(2x+5y\right)$$

Hei kimi i te tauaro o 7yx+4y^{2}, kimihia te tauaro o ia taurangi.

$$4x-7yx-4y^{2}-\left(2x+8y\right)\left(2x+5y\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 2x+8y ki ia tau o 2x+5y.

$$4x-7yx-4y^{2}-\left(4x^{2}+10xy+16yx+40y^{2}\right)$$

Pahekotia te 10xy me 16yx, ka 26xy.

$$4x-7yx-4y^{2}-\left(4x^{2}+26xy+40y^{2}\right)$$

Hei kimi i te tauaro o 4x^{2}+26xy+40y^{2}, kimihia te tauaro o ia taurangi.

$$4x-7yx-4y^{2}-4x^{2}-26xy-40y^{2}$$

Pahekotia te -7yx me -26xy, ka -33yx.

$$4x-33yx-4y^{2}-4x^{2}-40y^{2}$$

Pahekotia te -4y^{2} me -40y^{2}, ka -44y^{2}.

$$4x-33yx-44y^{2}-4x^{2}$$