4x^2+12x+9=4

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Solution for 4x^2+12x+9=4 equation:


Simplifying
4x2 + 12x + 9 = 4

Reorder the terms:
9 + 12x + 4x2 = 4

Solving
9 + 12x + 4x2 = 4

Solving for variable 'x'.

Reorder the terms:
9 + -4 + 12x + 4x2 = 4 + -4

Combine like terms: 9 + -4 = 5
5 + 12x + 4x2 = 4 + -4

Combine like terms: 4 + -4 = 0
5 + 12x + 4x2 = 0

Factor a trinomial.
(5 + 2x)(1 + 2x) = 0

Subproblem 1

Set the factor '(5 + 2x)' equal to zero and attempt to solve: Simplifying 5 + 2x = 0 Solving 5 + 2x = 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 + 2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 2x = 0 + -5 2x = 0 + -5 Combine like terms: 0 + -5 = -5 2x = -5 Divide each side by '2'. x = -2.5 Simplifying x = -2.5

Subproblem 2

Set the factor '(1 + 2x)' equal to zero and attempt to solve: Simplifying 1 + 2x = 0 Solving 1 + 2x = 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 + 2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2x = 0 + -1 2x = 0 + -1 Combine like terms: 0 + -1 = -1 2x = -1 Divide each side by '2'. x = -0.5 Simplifying x = -0.5

Solution

x = {-2.5, -0.5}

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