how do I solve for 16x^2+56x-120

2 answers

In google type:
quadratic equation online

When you see list of results click on:

Free Online Quadratic Equation Solver:Solve by Quadratic Formula

When page be open in rectangle type:

16x^2+56x-120=0

and click option: solve it

You will see solution step-by step
I assume you meant
solve 16x^2+56x-120=0 , you must have an "equation" to solve for it.

divide by 8
2x^2 + 7x - 15 = 0
(2x-3)(x+5) = 0
x = 3/2 or x = -5
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