8x^2-16x-6=4

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Solution for 8x^2-16x-6=4 equation:


Simplifying
8x2 + -16x + -6 = 4

Reorder the terms:
-6 + -16x + 8x2 = 4

Solving
-6 + -16x + 8x2 = 4

Solving for variable 'x'.

Reorder the terms:
-6 + -4 + -16x + 8x2 = 4 + -4

Combine like terms: -6 + -4 = -10
-10 + -16x + 8x2 = 4 + -4

Combine like terms: 4 + -4 = 0
-10 + -16x + 8x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-5 + -8x + 4x2) = 0

Factor a trinomial.
2((-1 + -2x)(5 + -2x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-1 + -2x)' equal to zero and attempt to solve: Simplifying -1 + -2x = 0 Solving -1 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -2x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2x = 0 + 1 -2x = 0 + 1 Combine like terms: 0 + 1 = 1 -2x = 1 Divide each side by '-2'. x = -0.5 Simplifying x = -0.5

Subproblem 2

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

Solution

x = {-0.5, 2.5}

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