Datrys 2left(x-1right)^2+4(x-1)+2

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

Enrhifo

$$2x^{2}$$

Camau Ateb

Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-1\right)^{2}.

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

Defnyddio’r briodwedd ddosbarthu i luosi 2 â x^{2}-2x+1.

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

Defnyddio’r briodwedd ddosbarthu i luosi 4 â x-1.

$$2x^{2}-4x+2+4x-4+2$$

Cyfuno -4x a 4x i gael 0.

$$2x^{2}+2-4+2$$

Tynnu 4 o 2 i gael -2.

$$2x^{2}-2+2$$

Adio -2 a 2 i gael 0.

$$2x^{2}$$

Ehangu

$$2x^{2}$$

Camau Ateb

Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-1\right)^{2}.

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

Defnyddio’r briodwedd ddosbarthu i luosi 2 â x^{2}-2x+1.

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

Defnyddio’r briodwedd ddosbarthu i luosi 4 â x-1.

$$2x^{2}-4x+2+4x-4+2$$

Cyfuno -4x a 4x i gael 0.

$$2x^{2}+2-4+2$$

Tynnu 4 o 2 i gael -2.

$$2x^{2}-2+2$$

Adio -2 a 2 i gael 0.

$$2x^{2}$$