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

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


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

Reorder the terms:
0 = -77 + 4x + x2

Solving
0 = -77 + 4x + x2

Solving for variable 'x'.

Combine like terms: 0 + 77 = 77
77 + -4x + -1x2 = -77 + 4x + x2 + 77 + -4x + -1x2

Reorder the terms:
77 + -4x + -1x2 = -77 + 77 + 4x + -4x + x2 + -1x2

Combine like terms: -77 + 77 = 0
77 + -4x + -1x2 = 0 + 4x + -4x + x2 + -1x2
77 + -4x + -1x2 = 4x + -4x + x2 + -1x2

Combine like terms: 4x + -4x = 0
77 + -4x + -1x2 = 0 + x2 + -1x2
77 + -4x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
77 + -4x + -1x2 = 0

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

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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