x^2+10x+9=9

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Solution for x^2+10x+9=9 equation: 


Simplifying
x2 + 10x + 9 = 9

Reorder the terms:
9 + 10x + x2 = 9

Add '-9' to each side of the equation.
9 + 10x + -9 + x2 = 9 + -9

Reorder the terms:
9 + -9 + 10x + x2 = 9 + -9

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

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

Solving
10x + x2 = 0

Solving for variable 'x'.

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


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 '(10 + x)' equal to zero and attempt to solve:

Simplifying
10 + x = 0

Solving
10 + x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-10' to each side of the equation.
10 + -10 + x = 0 + -10

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

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

Simplifying
x = -10
Solution
x = {0, -10}

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