4x^2+15=-16x

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Solution for 4x^2+15=-16x equation:


Simplifying
4x2 + 15 = -16x

Reorder the terms:
15 + 4x2 = -16x

Solving
15 + 4x2 = -16x

Solving for variable 'x'.

Reorder the terms:
15 + 16x + 4x2 = -16x + 16x

Combine like terms: -16x + 16x = 0
15 + 16x + 4x2 = 0

Factor a trinomial.
(5 + 2x)(3 + 2x) = 0

Subproblem 1

Set the factor '(5 + 2x)' equal to zero and attempt to solve: Simplifying 5 + 2x = 0 Solving 5 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 2x = 0 + -5 2x = 0 + -5 Combine like terms: 0 + -5 = -5 2x = -5 Divide each side by '2'. x = -2.5 Simplifying x = -2.5

Subproblem 2

Set the factor '(3 + 2x)' equal to zero and attempt to solve: Simplifying 3 + 2x = 0 Solving 3 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 2x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 2x = 0 + -3 2x = 0 + -3 Combine like terms: 0 + -3 = -3 2x = -3 Divide each side by '2'. x = -1.5 Simplifying x = -1.5

Solution

x = {-2.5, -1.5}

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