Evaluate the expression: $$4a^2-4ab+b^2$$, when $$ a = 2$$ and $$b = 5$$

Question

Uniteasy Admin · Accepted Answer

Apply perfect square formula to the expression
$$4a^2-4ab+b^2$$ 
$$=(2a-b)^2$$ 
Substitute the value of $$ a = 2$$ and $$b = 5$$ , then
$$(2	imes 2-5)^2 = 1$$
B is correct

Multiple Choice Question (MCQ)

Answer