if x = -1, (-5x)^2 =

Explanation:

Step1: Substitute (x = -1) into the expression

Substitute (x=-1) into ((-5x)^{2}), we get ((-5\times(-1))^{2}).

Step2: Calculate the value inside the parentheses first

Calculate (-5\times(-1)=5), so the expression becomes (5^{2}).

Step3: Calculate the square

(5^{2}=5\times5 = 25).

Answer:

(25)