Question

write an expression for the area of the square and simplify your answer. a =

Explanation:

Step1: Recall area formula

The area formula for a square is $A = s^2$, where $s$ is the side - length of the square. Here, $s=x - 1$.
So, $A=(x - 1)^2$.

Step2: Expand the square

Using the formula $(a - b)^2=a^2-2ab + b^2$, where $a = x$ and $b = 1$.
$(x - 1)^2=x^2-2x\times1+1^2=x^2-2x + 1$.

Answer:

$x^2-2x + 1$