x+5=x^2+5x-7

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Solution for x+5=x^2+5x-7 equation:


Simplifying
x + 5 = x2 + 5x + -7

Reorder the terms:
5 + x = x2 + 5x + -7

Reorder the terms:
5 + x = -7 + 5x + x2

Solving
5 + x = -7 + 5x + x2

Solving for variable 'x'.

Reorder the terms:
5 + 7 + x + -5x + -1x2 = -7 + 5x + x2 + 7 + -5x + -1x2

Combine like terms: 5 + 7 = 12
12 + x + -5x + -1x2 = -7 + 5x + x2 + 7 + -5x + -1x2

Combine like terms: x + -5x = -4x
12 + -4x + -1x2 = -7 + 5x + x2 + 7 + -5x + -1x2

Reorder the terms:
12 + -4x + -1x2 = -7 + 7 + 5x + -5x + x2 + -1x2

Combine like terms: -7 + 7 = 0
12 + -4x + -1x2 = 0 + 5x + -5x + x2 + -1x2
12 + -4x + -1x2 = 5x + -5x + x2 + -1x2

Combine like terms: 5x + -5x = 0
12 + -4x + -1x2 = 0 + x2 + -1x2
12 + -4x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
12 + -4x + -1x2 = 0

Factor a trinomial.
(2 + -1x)(6 + x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(6 + x)' equal to zero and attempt to solve: Simplifying 6 + x = 0 Solving 6 + x = 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 + x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + x = 0 + -6 x = 0 + -6 Combine like terms: 0 + -6 = -6 x = -6 Simplifying x = -6

Solution

x = {2, -6}

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