x^2+7x-16=9x-1

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Solution for x^2+7x-16=9x-1 equation:


Simplifying
x2 + 7x + -16 = 9x + -1

Reorder the terms:
-16 + 7x + x2 = 9x + -1

Reorder the terms:
-16 + 7x + x2 = -1 + 9x

Solving
-16 + 7x + x2 = -1 + 9x

Solving for variable 'x'.

Reorder the terms:
-16 + 1 + 7x + -9x + x2 = -1 + 9x + 1 + -9x

Combine like terms: -16 + 1 = -15
-15 + 7x + -9x + x2 = -1 + 9x + 1 + -9x

Combine like terms: 7x + -9x = -2x
-15 + -2x + x2 = -1 + 9x + 1 + -9x

Reorder the terms:
-15 + -2x + x2 = -1 + 1 + 9x + -9x

Combine like terms: -1 + 1 = 0
-15 + -2x + x2 = 0 + 9x + -9x
-15 + -2x + x2 = 9x + -9x

Combine like terms: 9x + -9x = 0
-15 + -2x + x2 = 0

Factor a trinomial.
(-3 + -1x)(5 + -1x) = 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 '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {-3, 5}

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