x+5+x^2+x-20=-7

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Solution for x+5+x^2+x-20=-7 equation:


Simplifying
x + 5 + x2 + x + -20 = -7

Reorder the terms:
5 + -20 + x + x + x2 = -7

Combine like terms: 5 + -20 = -15
-15 + x + x + x2 = -7

Combine like terms: x + x = 2x
-15 + 2x + x2 = -7

Solving
-15 + 2x + x2 = -7

Solving for variable 'x'.

Reorder the terms:
-15 + 7 + 2x + x2 = -7 + 7

Combine like terms: -15 + 7 = -8
-8 + 2x + x2 = -7 + 7

Combine like terms: -7 + 7 = 0
-8 + 2x + x2 = 0

Factor a trinomial.
(-4 + -1x)(2 + -1x) = 0

Subproblem 1

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

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 = {-4, 2}

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