Question

A particular painting is a square 3x+53x+5 inches on each side. find and expand an expression for the area of the painting. your answer should be simplified with all like terms combined. if necessary, use '∧∧' for exponents (e.g. x∧2x∧2 for x2x2).

Answer 1

x^2 -10x+25

This is the answer I got from Khan Academy

Answer 2

Area of square = s²

Therefore, the area of this square can be:

(3x+53x+5)²

Now let's expand this.

(3x+53x+5)²
9x² + 2809x² + 25
2818x² + 25

So yeah.

x² = x^2