3x^2+6x-77=-5

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Solution for 3x^2+6x-77=-5 equation:


Simplifying
3x2 + 6x + -77 = -5

Reorder the terms:
-77 + 6x + 3x2 = -5

Solving
-77 + 6x + 3x2 = -5

Solving for variable 'x'.

Reorder the terms:
-77 + 5 + 6x + 3x2 = -5 + 5

Combine like terms: -77 + 5 = -72
-72 + 6x + 3x2 = -5 + 5

Combine like terms: -5 + 5 = 0
-72 + 6x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-24 + 2x + x2) = 0

Factor a trinomial.
3((-6 + -1x)(4 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-6 + -1x)' equal to zero and attempt to solve: Simplifying -6 + -1x = 0 Solving -6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -1x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -1x = 0 + 6 -1x = 0 + 6 Combine like terms: 0 + 6 = 6 -1x = 6 Divide each side by '-1'. x = -6 Simplifying x = -6

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {-6, 4}

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