13x^2-142x-11=0

Solution for 13x^2-142x-11=0 equation:

Simplifying
13x2 + -142x + -11 = 0

Reorder the terms:
-11 + -142x + 13x2 = 0

Solving
-11 + -142x + 13x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-1 + -13x)(11 + -1x) = 0

Subproblem 1
Set the factor '(-1 + -13x)' equal to zero and attempt to solve:

Simplifying
-1 + -13x = 0

Solving
-1 + -13x = 0

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

Add '1' to each side of the equation.
-1 + 1 + -13x = 0 + 1

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

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

Divide each side by '-13'.
x = -0.07692307692

Simplifying
x = -0.07692307692
Subproblem 2
Set the factor '(11 + -1x)' equal to zero and attempt to solve:

Simplifying
11 + -1x = 0

Solving
11 + -1x = 0

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

Add '-11' to each side of the equation.
11 + -11 + -1x = 0 + -11

Combine like terms: 11 + -11 = 0
0 + -1x = 0 + -11
-1x = 0 + -11

Combine like terms: 0 + -11 = -11
-1x = -11

Divide each side by '-1'.
x = 11

Simplifying
x = 11
Solution
x = {-0.07692307692, 11}