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

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

Enrhifo

$$22$$

Camau Ateb

Cyfrifwch y briodoledd ddosrannol drwy luosi pob 2x+3 gan bob 6x+2.

$$12x^{2}+4x+18x+6-6x\left(2x+13\right)+8\left(7x+2\right)$$

Cyfuno 4x a 18x i gael 22x.

$$12x^{2}+22x+6-6x\left(2x+13\right)+8\left(7x+2\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 8 â 7x+2.

$$12x^{2}+22x+6-6x\left(2x+13\right)+56x+16$$

Defnyddio’r briodwedd ddosbarthu i luosi -6x â 2x+13.

$$12x^{2}+22x+6-12x^{2}-78x+56x+16$$

Cyfuno 12x^{2} a -12x^{2} i gael 0.

$$22x+6-78x+56x+16$$

Cyfuno 22x a -78x i gael -56x.

$$-56x+6+56x+16$$

Cyfuno -56x a 56x i gael 0.

$$6+16$$

Adio 6 a 16 i gael 22.

$$22$$

Ffactor

$$2\times 11$$

Camau Ateb

Ffactora allan 2.

$$2\left(\left(2x+3\right)\left(3x+1\right)-3x\left(2x+13\right)+4\left(7x+2\right)\right)$$

Symleiddio.

$$22$$