0=x^2+9x^2+20x

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Solution for 0=x^2+9x^2+20x equation:


Simplifying
0 = x2 + 9x2 + 20x

Reorder the terms:
0 = 20x + x2 + 9x2

Combine like terms: x2 + 9x2 = 10x2
0 = 20x + 10x2

Solving
0 = 20x + 10x2

Solving for variable 'x'.
Remove the zero:
-20x + -10x2 = 20x + 10x2 + -20x + -10x2

Reorder the terms:
-20x + -10x2 = 20x + -20x + 10x2 + -10x2

Combine like terms: 20x + -20x = 0
-20x + -10x2 = 0 + 10x2 + -10x2
-20x + -10x2 = 10x2 + -10x2

Combine like terms: 10x2 + -10x2 = 0
-20x + -10x2 = 0

Factor out the Greatest Common Factor (GCF), '-10x'.
-10x(2 + x) = 0

Ignore the factor -10.

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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