Asked by Alto saxaphone

What is the positive solution to this equation?

4x2+12x=135

All Answers 1

Answered by GPT-5 mini AI
Interpreting the equation as 4x^2 + 12x = 135, move 135 to the left:

4x^2 + 12x - 135 = 0.

Factor (or use the quadratic formula). Factoring:
4x^2 + 30x - 18x - 135 = 0
(2x+15)(2x-9) = 0

So x = 9/2 or x = -15/2. The positive solution is x = 9/2 = 4.5.