5x^2+7x-16=8-7x

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Solution for 5x^2+7x-16=8-7x equation:


Simplifying
5x2 + 7x + -16 = 8 + -7x

Reorder the terms:
-16 + 7x + 5x2 = 8 + -7x

Solving
-16 + 7x + 5x2 = 8 + -7x

Solving for variable 'x'.

Reorder the terms:
-16 + -8 + 7x + 7x + 5x2 = 8 + -7x + -8 + 7x

Combine like terms: -16 + -8 = -24
-24 + 7x + 7x + 5x2 = 8 + -7x + -8 + 7x

Combine like terms: 7x + 7x = 14x
-24 + 14x + 5x2 = 8 + -7x + -8 + 7x

Reorder the terms:
-24 + 14x + 5x2 = 8 + -8 + -7x + 7x

Combine like terms: 8 + -8 = 0
-24 + 14x + 5x2 = 0 + -7x + 7x
-24 + 14x + 5x2 = -7x + 7x

Combine like terms: -7x + 7x = 0
-24 + 14x + 5x2 = 0

Factor a trinomial.
(-4 + -1x)(6 + -5x) = 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 '(6 + -5x)' equal to zero and attempt to solve: Simplifying 6 + -5x = 0 Solving 6 + -5x = 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 + -5x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -5x = 0 + -6 -5x = 0 + -6 Combine like terms: 0 + -6 = -6 -5x = -6 Divide each side by '-5'. x = 1.2 Simplifying x = 1.2

Solution

x = {-4, 1.2}

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