x^2=20x-36

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Solution for x^2=20x-36 equation:


Simplifying
x2 = 20x + -36

Reorder the terms:
x2 = -36 + 20x

Solving
x2 = -36 + 20x

Solving for variable 'x'.

Reorder the terms:
36 + -20x + x2 = -36 + 20x + 36 + -20x

Reorder the terms:
36 + -20x + x2 = -36 + 36 + 20x + -20x

Combine like terms: -36 + 36 = 0
36 + -20x + x2 = 0 + 20x + -20x
36 + -20x + x2 = 20x + -20x

Combine like terms: 20x + -20x = 0
36 + -20x + x2 = 0

Factor a trinomial.
(2 + -1x)(18 + -1x) = 0

Subproblem 1

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 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 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Subproblem 2

Set the factor '(18 + -1x)' equal to zero and attempt to solve: Simplifying 18 + -1x = 0 Solving 18 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + -1x = 0 + -18 Combine like terms: 18 + -18 = 0 0 + -1x = 0 + -18 -1x = 0 + -18 Combine like terms: 0 + -18 = -18 -1x = -18 Divide each side by '-1'. x = 18 Simplifying x = 18

Solution

x = {2, 18}

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