8=x^2+5x-16

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Solution for 8=x^2+5x-16 equation:


Simplifying
8 = x2 + 5x + -16

Reorder the terms:
8 = -16 + 5x + x2

Solving
8 = -16 + 5x + x2

Solving for variable 'x'.

Combine like terms: 8 + 16 = 24
24 + -5x + -1x2 = -16 + 5x + x2 + 16 + -5x + -1x2

Reorder the terms:
24 + -5x + -1x2 = -16 + 16 + 5x + -5x + x2 + -1x2

Combine like terms: -16 + 16 = 0
24 + -5x + -1x2 = 0 + 5x + -5x + x2 + -1x2
24 + -5x + -1x2 = 5x + -5x + x2 + -1x2

Combine like terms: 5x + -5x = 0
24 + -5x + -1x2 = 0 + x2 + -1x2
24 + -5x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
24 + -5x + -1x2 = 0

Factor a trinomial.
(3 + -1x)(8 + x) = 0

Subproblem 1

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Subproblem 2

Set the factor '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

Solution

x = {3, -8}

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