7x^2-12x-8=-4

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Solution for 7x^2-12x-8=-4 equation:


Simplifying
7x2 + -12x + -8 = -4

Reorder the terms:
-8 + -12x + 7x2 = -4

Solving
-8 + -12x + 7x2 = -4

Solving for variable 'x'.

Reorder the terms:
-8 + 4 + -12x + 7x2 = -4 + 4

Combine like terms: -8 + 4 = -4
-4 + -12x + 7x2 = -4 + 4

Combine like terms: -4 + 4 = 0
-4 + -12x + 7x2 = 0

Factor a trinomial.
(-2 + -7x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-2 + -7x)' equal to zero and attempt to solve: Simplifying -2 + -7x = 0 Solving -2 + -7x = 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 + -7x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -7x = 0 + 2 -7x = 0 + 2 Combine like terms: 0 + 2 = 2 -7x = 2 Divide each side by '-7'. x = -0.2857142857 Simplifying x = -0.2857142857

Subproblem 2

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

Solution

x = {-0.2857142857, 2}

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