(x+3)*(x-3)=x-9

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Solution for (x+3)*(x-3)=x-9 equation:


Simplifying
(x + 3)(x + -3) = x + -9

Reorder the terms:
(3 + x)(x + -3) = x + -9

Reorder the terms:
(3 + x)(-3 + x) = x + -9

Multiply (3 + x) * (-3 + x)
(3(-3 + x) + x(-3 + x)) = x + -9
((-3 * 3 + x * 3) + x(-3 + x)) = x + -9
((-9 + 3x) + x(-3 + x)) = x + -9
(-9 + 3x + (-3 * x + x * x)) = x + -9
(-9 + 3x + (-3x + x2)) = x + -9

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

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

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

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

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

Solving
x2 = x

Solving for variable 'x'.

Reorder the terms:
-1x + x2 = x + -1x

Combine like terms: x + -1x = 0
-1x + x2 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(-1 + 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 '(-1 + x)' equal to zero and attempt to solve: Simplifying -1 + x = 0 Solving -1 + x = 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 + x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0 + 1 x = 0 + 1 Combine like terms: 0 + 1 = 1 x = 1 Simplifying x = 1

Solution

x = {0, 1}

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