0=2(x^2+4x-77)

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Solution for 0=2(x^2+4x-77) equation:


Simplifying
0 = 2(x2 + 4x + -77)

Reorder the terms:
0 = 2(-77 + 4x + x2)
0 = (-77 * 2 + 4x * 2 + x2 * 2)
0 = (-154 + 8x + 2x2)

Solving
0 = -154 + 8x + 2x2

Solving for variable 'x'.

Combine like terms: 0 + 154 = 154
154 + -8x + -2x2 = -154 + 8x + 2x2 + 154 + -8x + -2x2

Reorder the terms:
154 + -8x + -2x2 = -154 + 154 + 8x + -8x + 2x2 + -2x2

Combine like terms: -154 + 154 = 0
154 + -8x + -2x2 = 0 + 8x + -8x + 2x2 + -2x2
154 + -8x + -2x2 = 8x + -8x + 2x2 + -2x2

Combine like terms: 8x + -8x = 0
154 + -8x + -2x2 = 0 + 2x2 + -2x2
154 + -8x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
154 + -8x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(77 + -4x + -1x2) = 0

Factor a trinomial.
2((7 + -1x)(11 + x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 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 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7

Subproblem 2

Set the factor '(11 + x)' equal to zero and attempt to solve: Simplifying 11 + x = 0 Solving 11 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = 0 + -11 Combine like terms: 11 + -11 = 0 0 + x = 0 + -11 x = 0 + -11 Combine like terms: 0 + -11 = -11 x = -11 Simplifying x = -11

Solution

x = {7, -11}

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