8x^2+14x+21=-12x

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Solution for 8x^2+14x+21=-12x equation:


Simplifying
8x2 + 14x + 21 = -12x

Reorder the terms:
21 + 14x + 8x2 = -12x

Solving
21 + 14x + 8x2 = -12x

Solving for variable 'x'.

Reorder the terms:
21 + 14x + 12x + 8x2 = -12x + 12x

Combine like terms: 14x + 12x = 26x
21 + 26x + 8x2 = -12x + 12x

Combine like terms: -12x + 12x = 0
21 + 26x + 8x2 = 0

Factor a trinomial.
(7 + 4x)(3 + 2x) = 0

Subproblem 1

Set the factor '(7 + 4x)' equal to zero and attempt to solve: Simplifying 7 + 4x = 0 Solving 7 + 4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 4x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 4x = 0 + -7 4x = 0 + -7 Combine like terms: 0 + -7 = -7 4x = -7 Divide each side by '4'. x = -1.75 Simplifying x = -1.75

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 = {-1.75, -1.5}

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