x^2-3x-4x^2-9=3x-9

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Solution for x^2-3x-4x^2-9=3x-9 equation:


Simplifying
x2 + -3x + -4x2 + -9 = 3x + -9

Reorder the terms:
-9 + -3x + x2 + -4x2 = 3x + -9

Combine like terms: x2 + -4x2 = -3x2
-9 + -3x + -3x2 = 3x + -9

Reorder the terms:
-9 + -3x + -3x2 = -9 + 3x

Add '9' to each side of the equation.
-9 + -3x + 9 + -3x2 = -9 + 9 + 3x

Reorder the terms:
-9 + 9 + -3x + -3x2 = -9 + 9 + 3x

Combine like terms: -9 + 9 = 0
0 + -3x + -3x2 = -9 + 9 + 3x
-3x + -3x2 = -9 + 9 + 3x

Combine like terms: -9 + 9 = 0
-3x + -3x2 = 0 + 3x
-3x + -3x2 = 3x

Solving
-3x + -3x2 = 3x

Solving for variable 'x'.

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

Combine like terms: -3x + -3x = -6x
-6x + -3x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-6x + -3x2 = 0

Factor out the Greatest Common Factor (GCF), '-3x'.
-3x(2 + x) = 0

Ignore the factor -3.

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 '(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 = {0, -2}

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