(5x-2)+(x^2+8)=90

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Solution for (5x-2)+(x^2+8)=90 equation:


Simplifying
(5x + -2) + (x2 + 8) = 90

Reorder the terms:
(-2 + 5x) + (x2 + 8) = 90

Remove parenthesis around (-2 + 5x)
-2 + 5x + (x2 + 8) = 90

Reorder the terms:
-2 + 5x + (8 + x2) = 90

Remove parenthesis around (8 + x2)
-2 + 5x + 8 + x2 = 90

Reorder the terms:
-2 + 8 + 5x + x2 = 90

Combine like terms: -2 + 8 = 6
6 + 5x + x2 = 90

Solving
6 + 5x + x2 = 90

Solving for variable 'x'.

Reorder the terms:
6 + -90 + 5x + x2 = 90 + -90

Combine like terms: 6 + -90 = -84
-84 + 5x + x2 = 90 + -90

Combine like terms: 90 + -90 = 0
-84 + 5x + x2 = 0

Factor a trinomial.
(-12 + -1x)(7 + -1x) = 0

Subproblem 1

Set the factor '(-12 + -1x)' equal to zero and attempt to solve: Simplifying -12 + -1x = 0 Solving -12 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + -1x = 0 + 12 Combine like terms: -12 + 12 = 0 0 + -1x = 0 + 12 -1x = 0 + 12 Combine like terms: 0 + 12 = 12 -1x = 12 Divide each side by '-1'. x = -12 Simplifying x = -12

Subproblem 2

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

Solution

x = {-12, 7}

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