4x^2+12x-9=-9

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


Simplifying
4x2 + 12x + -9 = -9

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

Add '9' to each side of the equation.
-9 + 12x + 9 + 4x2 = -9 + 9

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

Combine like terms: -9 + 9 = 0
0 + 12x + 4x2 = -9 + 9
12x + 4x2 = -9 + 9

Combine like terms: -9 + 9 = 0
12x + 4x2 = 0

Solving
12x + 4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4x'.
4x(3 + x) = 0

Ignore the factor 4.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 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 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Solution

x = {0, -3}

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