x=12-x^2

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Solution for x=12-x^2 equation:


Simplifying
x = 12 + -1x2

Solving
x = 12 + -1x2

Solving for variable 'x'.

Reorder the terms:
-12 + x + x2 = 12 + -1x2 + -12 + x2

Reorder the terms:
-12 + x + x2 = 12 + -12 + -1x2 + x2

Combine like terms: 12 + -12 = 0
-12 + x + x2 = 0 + -1x2 + x2
-12 + x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-12 + x + x2 = 0

Factor a trinomial.
(-4 + -1x)(3 + -1x) = 0

Subproblem 1

Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-4, 3}

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