2x^2+8x+4=x^2+4x

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Solution for 2x^2+8x+4=x^2+4x equation:


Simplifying
2x2 + 8x + 4 = x2 + 4x

Reorder the terms:
4 + 8x + 2x2 = x2 + 4x

Reorder the terms:
4 + 8x + 2x2 = 4x + x2

Solving
4 + 8x + 2x2 = 4x + x2

Solving for variable 'x'.

Reorder the terms:
4 + 8x + -4x + 2x2 + -1x2 = 4x + x2 + -4x + -1x2

Combine like terms: 8x + -4x = 4x
4 + 4x + 2x2 + -1x2 = 4x + x2 + -4x + -1x2

Combine like terms: 2x2 + -1x2 = 1x2
4 + 4x + 1x2 = 4x + x2 + -4x + -1x2

Reorder the terms:
4 + 4x + 1x2 = 4x + -4x + x2 + -1x2

Combine like terms: 4x + -4x = 0
4 + 4x + 1x2 = 0 + x2 + -1x2
4 + 4x + 1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
4 + 4x + 1x2 = 0

Factor a trinomial.
(2 + x)(2 + x) = 0

Subproblem 1

Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Subproblem 2

Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Solution

x = {-2, -2}

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