Datrys (x+9)(x+9)

$$(x+9)(x+9)$$

Enrhifo

$$\left(x+9\right)^{2}$$

Camau Ateb

Lluosi x+9 a x+9 i gael \left(x+9\right)^{2}.

$$\left(x+9\right)^{2}$$

Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+9\right)^{2}.

$$x^{2}+18x+81$$

Ehangu

$$x^{2}+18x+81$$

Camau Ateb

Lluosi x+9 a x+9 i gael \left(x+9\right)^{2}.

$$\left(x+9\right)^{2}$$

Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+9\right)^{2}.

$$x^{2}+18x+81$$