0=x^2-13x-30

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Solution for 0=x^2-13x-30 equation:


Simplifying
0 = x2 + -13x + -30

Reorder the terms:
0 = -30 + -13x + x2

Solving
0 = -30 + -13x + x2

Solving for variable 'x'.

Combine like terms: 0 + 30 = 30
30 + 13x + -1x2 = -30 + -13x + x2 + 30 + 13x + -1x2

Reorder the terms:
30 + 13x + -1x2 = -30 + 30 + -13x + 13x + x2 + -1x2

Combine like terms: -30 + 30 = 0
30 + 13x + -1x2 = 0 + -13x + 13x + x2 + -1x2
30 + 13x + -1x2 = -13x + 13x + x2 + -1x2

Combine like terms: -13x + 13x = 0
30 + 13x + -1x2 = 0 + x2 + -1x2
30 + 13x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
30 + 13x + -1x2 = 0

Factor a trinomial.
(15 + -1x)(2 + x) = 0

Subproblem 1

Set the factor '(15 + -1x)' equal to zero and attempt to solve: Simplifying 15 + -1x = 0 Solving 15 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -1x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1x = 0 + -15 -1x = 0 + -15 Combine like terms: 0 + -15 = -15 -1x = -15 Divide each side by '-1'. x = 15 Simplifying x = 15

Subproblem 2

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

Solution

x = {15, -2}

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