-2x^2-2=5x-9

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Solution for -2x^2-2=5x-9 equation:


Simplifying
-2x2 + -2 = 5x + -9

Reorder the terms:
-2 + -2x2 = 5x + -9

Reorder the terms:
-2 + -2x2 = -9 + 5x

Solving
-2 + -2x2 = -9 + 5x

Solving for variable 'x'.

Reorder the terms:
-2 + 9 + -5x + -2x2 = -9 + 5x + 9 + -5x

Combine like terms: -2 + 9 = 7
7 + -5x + -2x2 = -9 + 5x + 9 + -5x

Reorder the terms:
7 + -5x + -2x2 = -9 + 9 + 5x + -5x

Combine like terms: -9 + 9 = 0
7 + -5x + -2x2 = 0 + 5x + -5x
7 + -5x + -2x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
7 + -5x + -2x2 = 0

Factor a trinomial.
(1 + -1x)(7 + 2x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(7 + 2x)' equal to zero and attempt to solve: Simplifying 7 + 2x = 0 Solving 7 + 2x = 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 + 2x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2x = 0 + -7 2x = 0 + -7 Combine like terms: 0 + -7 = -7 2x = -7 Divide each side by '2'. x = -3.5 Simplifying x = -3.5

Solution

x = {1, -3.5}

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