Question #N873
What is the value of $x$ if $x^2 - 10x + 25 = 0$?
A. 5
B. 10
C. 25
D. 50
Correct Answer is: A
The equation $x^2 - 10x + 25 = 0$ is a perfect square trinomial, which can be factored as $(x - 5)^2 = 0$. Taking the square root of both sides gives $x - 5 = 0$. Adding 5 to both sides gives $x = 5$.