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

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


Simplifying
2x2 + x + -7 = x2 + 7x + -16

Reorder the terms:
-7 + x + 2x2 = x2 + 7x + -16

Reorder the terms:
-7 + x + 2x2 = -16 + 7x + x2

Solving
-7 + x + 2x2 = -16 + 7x + x2

Solving for variable 'x'.

Reorder the terms:
-7 + 16 + x + -7x + 2x2 + -1x2 = -16 + 7x + x2 + 16 + -7x + -1x2

Combine like terms: -7 + 16 = 9
9 + x + -7x + 2x2 + -1x2 = -16 + 7x + x2 + 16 + -7x + -1x2

Combine like terms: x + -7x = -6x
9 + -6x + 2x2 + -1x2 = -16 + 7x + x2 + 16 + -7x + -1x2

Combine like terms: 2x2 + -1x2 = 1x2
9 + -6x + 1x2 = -16 + 7x + x2 + 16 + -7x + -1x2

Reorder the terms:
9 + -6x + 1x2 = -16 + 16 + 7x + -7x + x2 + -1x2

Combine like terms: -16 + 16 = 0
9 + -6x + 1x2 = 0 + 7x + -7x + x2 + -1x2
9 + -6x + 1x2 = 7x + -7x + x2 + -1x2

Combine like terms: 7x + -7x = 0
9 + -6x + 1x2 = 0 + x2 + -1x2
9 + -6x + 1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
9 + -6x + 1x2 = 0

Factor a trinomial.
(3 + -1x)(3 + -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 '(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

Solution

x = {3, 3}

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