3x^2+4x=2x^2-4

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Solution for 3x^2+4x=2x^2-4 equation:


Simplifying
3x2 + 4x = 2x2 + -4

Reorder the terms:
4x + 3x2 = 2x2 + -4

Reorder the terms:
4x + 3x2 = -4 + 2x2

Solving
4x + 3x2 = -4 + 2x2

Solving for variable 'x'.

Reorder the terms:
4 + 4x + 3x2 + -2x2 = -4 + 2x2 + 4 + -2x2

Combine like terms: 3x2 + -2x2 = 1x2
4 + 4x + 1x2 = -4 + 2x2 + 4 + -2x2

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

Combine like terms: -4 + 4 = 0
4 + 4x + 1x2 = 0 + 2x2 + -2x2
4 + 4x + 1x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 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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