99=x^2+30x

Solution for 99=x^2+30x equation:

Simplifying
99 = x2 + 30x

Reorder the terms:
99 = 30x + x2

Solving
99 = 30x + x2

Solving for variable 'x'.

Reorder the terms:
99 + -30x + -1x2 = 30x + -30x + x2 + -1x2

Combine like terms: 30x + -30x = 0
99 + -30x + -1x2 = 0 + x2 + -1x2
99 + -30x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
99 + -30x + -1x2 = 0

Factor a trinomial.
(3 + -1x)(33 + x) = 0

Subproblem 1
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
Subproblem 2
Set the factor '(33 + x)' equal to zero and attempt to solve:

Simplifying
33 + x = 0

Solving
33 + x = 0

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

Add '-33' to each side of the equation.
33 + -33 + x = 0 + -33

Combine like terms: 33 + -33 = 0
0 + x = 0 + -33
x = 0 + -33

Combine like terms: 0 + -33 = -33
x = -33

Simplifying
x = -33
Solution
x = {3, -33}