Datrys =(2x^2+1)^2+3(2x^2+1)

$$= ( 2 x ^ { 2 } + 1 ) ^ { 2 } + 3 ( 2 x ^ { 2 } + 1 )$$

Enrhifo

$$4x^{4}+10x^{2}+4$$

Camau Ateb

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

$$4\left(x^{2}\right)^{2}+4x^{2}+1+3\left(2x^{2}+1\right)$$

I godi pŵer rhif i bŵer arall, lluoswch yr esbonyddion. Lluoswch 2 a 2 i gael 4.

$$4x^{4}+4x^{2}+1+3\left(2x^{2}+1\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 3 â 2x^{2}+1.

$$4x^{4}+4x^{2}+1+6x^{2}+3$$

Cyfuno 4x^{2} a 6x^{2} i gael 10x^{2}.

$$4x^{4}+10x^{2}+1+3$$

Adio 1 a 3 i gael 4.

$$4x^{4}+10x^{2}+4$$

Ehangu

$$4x^{4}+10x^{2}+4$$

Camau Ateb

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

$$4\left(x^{2}\right)^{2}+4x^{2}+1+3\left(2x^{2}+1\right)$$

I godi pŵer rhif i bŵer arall, lluoswch yr esbonyddion. Lluoswch 2 a 2 i gael 4.

$$4x^{4}+4x^{2}+1+3\left(2x^{2}+1\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 3 â 2x^{2}+1.

$$4x^{4}+4x^{2}+1+6x^{2}+3$$

Cyfuno 4x^{2} a 6x^{2} i gael 10x^{2}.

$$4x^{4}+10x^{2}+1+3$$

Adio 1 a 3 i gael 4.

$$4x^{4}+10x^{2}+4$$