Whakaoti i te 7(2x+3)(6x+2)-6x(2x+13)+8(7x+2)

$$7 ( 2 x + 3 ) ( 6 x + 2 ) - 6 x ( 2 x + 13 ) + 8 ( 7 x + 2 )$$

Aromātai

$$72x^{2}+132x+58$$

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te 2x+3.

$$\left(14x+21\right)\left(6x+2\right)-6x\left(2x+13\right)+8\left(7x+2\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 14x+21 ki ia tau o 6x+2.

$$84x^{2}+28x+126x+42-6x\left(2x+13\right)+8\left(7x+2\right)$$

Pahekotia te 28x me 126x, ka 154x.

$$84x^{2}+154x+42-6x\left(2x+13\right)+8\left(7x+2\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te 8 ki te 7x+2.

$$84x^{2}+154x+42-6x\left(2x+13\right)+56x+16$$

Whakamahia te āhuatanga tohatoha hei whakarea te -6x ki te 2x+13.

$$84x^{2}+154x+42-12x^{2}-78x+56x+16$$

Pahekotia te 84x^{2} me -12x^{2}, ka 72x^{2}.

$$72x^{2}+154x+42-78x+56x+16$$

Pahekotia te 154x me -78x, ka 76x.

$$72x^{2}+76x+42+56x+16$$

Pahekotia te 76x me 56x, ka 132x.

$$72x^{2}+132x+42+16$$

Tāpirihia te 42 ki te 16, ka 58.

$$72x^{2}+132x+58$$

Whakaroha

$$72x^{2}+132x+58$$

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te 2x+3.

$$\left(14x+21\right)\left(6x+2\right)-6x\left(2x+13\right)+8\left(7x+2\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 14x+21 ki ia tau o 6x+2.

$$84x^{2}+28x+126x+42-6x\left(2x+13\right)+8\left(7x+2\right)$$

Pahekotia te 28x me 126x, ka 154x.

$$84x^{2}+154x+42-6x\left(2x+13\right)+8\left(7x+2\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te 8 ki te 7x+2.

$$84x^{2}+154x+42-6x\left(2x+13\right)+56x+16$$

Whakamahia te āhuatanga tohatoha hei whakarea te -6x ki te 2x+13.

$$84x^{2}+154x+42-12x^{2}-78x+56x+16$$

Pahekotia te 84x^{2} me -12x^{2}, ka 72x^{2}.

$$72x^{2}+154x+42-78x+56x+16$$

Pahekotia te 154x me -78x, ka 76x.

$$72x^{2}+76x+42+56x+16$$

Pahekotia te 76x me 56x, ka 132x.

$$72x^{2}+132x+42+16$$

Tāpirihia te 42 ki te 16, ka 58.

$$72x^{2}+132x+58$$