3x^2+4=-8x

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Solution for 3x^2+4=-8x equation:


Simplifying
3x2 + 4 = -8x

Reorder the terms:
4 + 3x2 = -8x

Solving
4 + 3x2 = -8x

Solving for variable 'x'.

Reorder the terms:
4 + 8x + 3x2 = -8x + 8x

Combine like terms: -8x + 8x = 0
4 + 8x + 3x2 = 0

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

Subproblem 1

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

Subproblem 2

Set the factor '(2 + 3x)' equal to zero and attempt to solve: Simplifying 2 + 3x = 0 Solving 2 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 3x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3x = 0 + -2 3x = 0 + -2 Combine like terms: 0 + -2 = -2 3x = -2 Divide each side by '3'. x = -0.6666666667 Simplifying x = -0.6666666667

Solution

x = {-2, -0.6666666667}

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