3x^2-11x-10=22

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Solution for 3x^2-11x-10=22 equation:


Simplifying
3x2 + -11x + -10 = 22

Reorder the terms:
-10 + -11x + 3x2 = 22

Solving
-10 + -11x + 3x2 = 22

Solving for variable 'x'.

Reorder the terms:
-10 + -22 + -11x + 3x2 = 22 + -22

Combine like terms: -10 + -22 = -32
-32 + -11x + 3x2 = 22 + -22

Combine like terms: 22 + -22 = 0
-32 + -11x + 3x2 = 0

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
-10.66666667 + -3.666666667x + x2 = 0

Move the constant term to the right:

Add '10.66666667' to each side of the equation.
-10.66666667 + -3.666666667x + 10.66666667 + x2 = 0 + 10.66666667

Reorder the terms:
-10.66666667 + 10.66666667 + -3.666666667x + x2 = 0 + 10.66666667

Combine like terms: -10.66666667 + 10.66666667 = 0.00000000
0.00000000 + -3.666666667x + x2 = 0 + 10.66666667
-3.666666667x + x2 = 0 + 10.66666667

Combine like terms: 0 + 10.66666667 = 10.66666667
-3.666666667x + x2 = 10.66666667

The x term is -3.666666667x.  Take half its coefficient (-1.833333334).
Square it (3.361111114) and add it to both sides.

Add '3.361111114' to each side of the equation.
-3.666666667x + 3.361111114 + x2 = 10.66666667 + 3.361111114

Reorder the terms:
3.361111114 + -3.666666667x + x2 = 10.66666667 + 3.361111114

Combine like terms: 10.66666667 + 3.361111114 = 14.027777784
3.361111114 + -3.666666667x + x2 = 14.027777784

Factor a perfect square on the left side:
(x + -1.833333334)(x + -1.833333334) = 14.027777784

Calculate the square root of the right side: 3.74536751

Break this problem into two subproblems by setting 
(x + -1.833333334) equal to 3.74536751 and -3.74536751.

Subproblem 1

x + -1.833333334 = 3.74536751 Simplifying x + -1.833333334 = 3.74536751 Reorder the terms: -1.833333334 + x = 3.74536751 Solving -1.833333334 + x = 3.74536751 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = 3.74536751 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = 3.74536751 + 1.833333334 x = 3.74536751 + 1.833333334 Combine like terms: 3.74536751 + 1.833333334 = 5.578700844 x = 5.578700844 Simplifying x = 5.578700844

Subproblem 2

x + -1.833333334 = -3.74536751 Simplifying x + -1.833333334 = -3.74536751 Reorder the terms: -1.833333334 + x = -3.74536751 Solving -1.833333334 + x = -3.74536751 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = -3.74536751 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = -3.74536751 + 1.833333334 x = -3.74536751 + 1.833333334 Combine like terms: -3.74536751 + 1.833333334 = -1.912034176 x = -1.912034176 Simplifying x = -1.912034176

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.578700844, -1.912034176}

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