162x-88x+11x^2=30

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Solution for 162x-88x+11x^2=30 equation:


Simplifying
162x + -88x + 11x2 = 30

Combine like terms: 162x + -88x = 74x
74x + 11x2 = 30

Solving
74x + 11x2 = 30

Solving for variable 'x'.

Reorder the terms:
-30 + 74x + 11x2 = 30 + -30

Combine like terms: 30 + -30 = 0
-30 + 74x + 11x2 = 0

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

Divide each side by '11'.
-2.727272727 + 6.727272727x + x2 = 0

Move the constant term to the right:

Add '2.727272727' to each side of the equation.
-2.727272727 + 6.727272727x + 2.727272727 + x2 = 0 + 2.727272727

Reorder the terms:
-2.727272727 + 2.727272727 + 6.727272727x + x2 = 0 + 2.727272727

Combine like terms: -2.727272727 + 2.727272727 = 0.000000000
0.000000000 + 6.727272727x + x2 = 0 + 2.727272727
6.727272727x + x2 = 0 + 2.727272727

Combine like terms: 0 + 2.727272727 = 2.727272727
6.727272727x + x2 = 2.727272727

The x term is 6.727272727x.  Take half its coefficient (3.363636364).
Square it (11.31404959) and add it to both sides.

Add '11.31404959' to each side of the equation.
6.727272727x + 11.31404959 + x2 = 2.727272727 + 11.31404959

Reorder the terms:
11.31404959 + 6.727272727x + x2 = 2.727272727 + 11.31404959

Combine like terms: 2.727272727 + 11.31404959 = 14.041322317
11.31404959 + 6.727272727x + x2 = 14.041322317

Factor a perfect square on the left side:
(x + 3.363636364)(x + 3.363636364) = 14.041322317

Calculate the square root of the right side: 3.747175245

Break this problem into two subproblems by setting 
(x + 3.363636364) equal to 3.747175245 and -3.747175245.

Subproblem 1

x + 3.363636364 = 3.747175245 Simplifying x + 3.363636364 = 3.747175245 Reorder the terms: 3.363636364 + x = 3.747175245 Solving 3.363636364 + x = 3.747175245 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.363636364' to each side of the equation. 3.363636364 + -3.363636364 + x = 3.747175245 + -3.363636364 Combine like terms: 3.363636364 + -3.363636364 = 0.000000000 0.000000000 + x = 3.747175245 + -3.363636364 x = 3.747175245 + -3.363636364 Combine like terms: 3.747175245 + -3.363636364 = 0.383538881 x = 0.383538881 Simplifying x = 0.383538881

Subproblem 2

x + 3.363636364 = -3.747175245 Simplifying x + 3.363636364 = -3.747175245 Reorder the terms: 3.363636364 + x = -3.747175245 Solving 3.363636364 + x = -3.747175245 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.363636364' to each side of the equation. 3.363636364 + -3.363636364 + x = -3.747175245 + -3.363636364 Combine like terms: 3.363636364 + -3.363636364 = 0.000000000 0.000000000 + x = -3.747175245 + -3.363636364 x = -3.747175245 + -3.363636364 Combine like terms: -3.747175245 + -3.363636364 = -7.110811609 x = -7.110811609 Simplifying x = -7.110811609

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.383538881, -7.110811609}

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