Question

multiply and simplify completely: $(x - 10)^2$

Explanation:

Step1: Expand using formula

We use the formula $(a - b)^2=a^{2}-2ab + b^{2}$, where $a = x$ and $b = 10$.
$(x - 10)^2=x^{2}-2\times x\times10+10^{2}$

Step2: Simplify the expression

$x^{2}-2\times x\times10+10^{2}=x^{2}-20x + 100$

Answer:

$x^{2}-20x + 100$