Question

Simplify this equation

Answer 1

Use the special cases of squared polynomials:

$(a+b)^2 = a^2 + 2ab + b^2$

Substitute the given equation.

$(a-2)^2 = a^2 + 2(a)(-2) + (-2)^2$

$a^2 -4a+4$

Answer 2

A^2 - 4a + 4
hope this helps!