Simplify the rational expression. Use factoring, and assume all variable expressions represent positive real numbers.
-If the lengths of the sides of a square are tripled, by what factor will the area change?
A) 3
B) 27
C) 9
D) 6

Question

Quizplus · Accepted Answer

The area of a square is given by the formula $A = s^2$, where $s$ is the length of a side. If the length of the sides is tripled, the new side length is $3s$, and the new area is $(3s)^2 = 9s^2$. This means the area is multiplied by a factor of 9.

Simplify the Rational Expression