8x^2+4x-2=22

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Solution for 8x^2+4x-2=22 equation:


Simplifying
8x2 + 4x + -2 = 22

Reorder the terms:
-2 + 4x + 8x2 = 22

Solving
-2 + 4x + 8x2 = 22

Solving for variable 'x'.

Reorder the terms:
-2 + -22 + 4x + 8x2 = 22 + -22

Combine like terms: -2 + -22 = -24
-24 + 4x + 8x2 = 22 + -22

Combine like terms: 22 + -22 = 0
-24 + 4x + 8x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-6 + x + 2x2) = 0

Factor a trinomial.
4((-2 + -1x)(3 + -2x)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 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 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

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, 1.5}

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