Question

The area of a square mural is 144x2 - 72x + 9. What is the length of one side
of the mural?

Answer 1

-0.25 units

Explanation:

144x^2 - 72x + 9 = 0

common factor: 9

16x^2 - 8x + 1 = 0

(4x + 1)^2 = 0

4x +1 = 0

4x = -1

x = -0.25 units