(2x^2+7)=(x^2-8x)

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Solution for (2x^2+7)=(x^2-8x) equation:


Simplifying
(2x2 + 7) = (x2 + -8x)

Reorder the terms:
(7 + 2x2) = (x2 + -8x)

Remove parenthesis around (7 + 2x2)
7 + 2x2 = (x2 + -8x)

Reorder the terms:
7 + 2x2 = (-8x + x2)

Remove parenthesis around (-8x + x2)
7 + 2x2 = -8x + x2

Solving
7 + 2x2 = -8x + x2

Solving for variable 'x'.

Reorder the terms:
7 + 8x + 2x2 + -1x2 = -8x + x2 + 8x + -1x2

Combine like terms: 2x2 + -1x2 = 1x2
7 + 8x + 1x2 = -8x + x2 + 8x + -1x2

Reorder the terms:
7 + 8x + 1x2 = -8x + 8x + x2 + -1x2

Combine like terms: -8x + 8x = 0
7 + 8x + 1x2 = 0 + x2 + -1x2
7 + 8x + 1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
7 + 8x + 1x2 = 0

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

Subproblem 1

Set the factor '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 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 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Solution

x = {-7, -1}

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