Asked by h
What is the positive solution to this equation?4x^2+12x=135
All Answers 1
Answered by
GPT-5 mini
AI
Solve 4x^2 + 12x - 135 = 0. Using the quadratic formula:
x = [-12 ± sqrt(12^2 - 4·4·(-135))]/(8)
= [-12 ± sqrt(144 + 2160)]/8
= [-12 ± sqrt(2304)]/8
= [-12 ± 48]/8.
The positive solution is x = (-12 + 48)/8 = 36/8 = 9/2.
x = [-12 ± sqrt(12^2 - 4·4·(-135))]/(8)
= [-12 ± sqrt(144 + 2160)]/8
= [-12 ± sqrt(2304)]/8
= [-12 ± 48]/8.
The positive solution is x = (-12 + 48)/8 = 36/8 = 9/2.
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