Solve (x+9)(x+9)

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

Evaluate

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

Solution Steps

Multiply x+9 and x+9 to get \left(x+9\right)^{2}.

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

Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+9\right)^{2}.

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

Expand

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

Solution Steps

Multiply x+9 and x+9 to get \left(x+9\right)^{2}.

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

Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+9\right)^{2}.

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