36x^2+24x-7=0

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Solution for 36x^2+24x-7=0 equation:


Simplifying
36x2 + 24x + -7 = 0

Reorder the terms:
-7 + 24x + 36x2 = 0

Solving
-7 + 24x + 36x2 = 0

Solving for variable 'x'.

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

Divide each side by '36'.
-0.1944444444 + 0.6666666667x + x2 = 0

Move the constant term to the right:

Add '0.1944444444' to each side of the equation.
-0.1944444444 + 0.6666666667x + 0.1944444444 + x2 = 0 + 0.1944444444

Reorder the terms:
-0.1944444444 + 0.1944444444 + 0.6666666667x + x2 = 0 + 0.1944444444

Combine like terms: -0.1944444444 + 0.1944444444 = 0.0000000000
0.0000000000 + 0.6666666667x + x2 = 0 + 0.1944444444
0.6666666667x + x2 = 0 + 0.1944444444

Combine like terms: 0 + 0.1944444444 = 0.1944444444
0.6666666667x + x2 = 0.1944444444

The x term is 0.6666666667x.  Take half its coefficient (0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
0.6666666667x + 0.1111111112 + x2 = 0.1944444444 + 0.1111111112

Reorder the terms:
0.1111111112 + 0.6666666667x + x2 = 0.1944444444 + 0.1111111112

Combine like terms: 0.1944444444 + 0.1111111112 = 0.3055555556
0.1111111112 + 0.6666666667x + x2 = 0.3055555556

Factor a perfect square on the left side:
(x + 0.3333333334)(x + 0.3333333334) = 0.3055555556

Calculate the square root of the right side: 0.552770798

Break this problem into two subproblems by setting 
(x + 0.3333333334) equal to 0.552770798 and -0.552770798.

Subproblem 1

x + 0.3333333334 = 0.552770798 Simplifying x + 0.3333333334 = 0.552770798 Reorder the terms: 0.3333333334 + x = 0.552770798 Solving 0.3333333334 + x = 0.552770798 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + x = 0.552770798 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + x = 0.552770798 + -0.3333333334 x = 0.552770798 + -0.3333333334 Combine like terms: 0.552770798 + -0.3333333334 = 0.2194374646 x = 0.2194374646 Simplifying x = 0.2194374646

Subproblem 2

x + 0.3333333334 = -0.552770798 Simplifying x + 0.3333333334 = -0.552770798 Reorder the terms: 0.3333333334 + x = -0.552770798 Solving 0.3333333334 + x = -0.552770798 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + x = -0.552770798 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + x = -0.552770798 + -0.3333333334 x = -0.552770798 + -0.3333333334 Combine like terms: -0.552770798 + -0.3333333334 = -0.8861041314 x = -0.8861041314 Simplifying x = -0.8861041314

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.2194374646, -0.8861041314}

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