x^2-20=3x-10

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Solution for x^2-20=3x-10 equation: 


Simplifying
x2 + -20 = 3x + -10

Reorder the terms:
-20 + x2 = 3x + -10

Reorder the terms:
-20 + x2 = -10 + 3x

Solving
-20 + x2 = -10 + 3x

Solving for variable 'x'.

Reorder the terms:
-20 + 10 + -3x + x2 = -10 + 3x + 10 + -3x

Combine like terms: -20 + 10 = -10
-10 + -3x + x2 = -10 + 3x + 10 + -3x

Reorder the terms:
-10 + -3x + x2 = -10 + 10 + 3x + -3x

Combine like terms: -10 + 10 = 0
-10 + -3x + x2 = 0 + 3x + -3x
-10 + -3x + x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-10 + -3x + x2 = 0

Factor a trinomial.
(-2 + -1x)(5 + -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 '(5 + -1x)' equal to zero and attempt to solve:

Simplifying
5 + -1x = 0

Solving
5 + -1x = 0

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

Add '-5' to each side of the equation.
5 + -5 + -1x = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -1x = 0 + -5
-1x = 0 + -5

Combine like terms: 0 + -5 = -5
-1x = -5

Divide each side by '-1'.
x = 5

Simplifying
x = 5
Solution
x = {-2, 5}

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