2*x*x+3*x+3=132

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Solution for 2*x*x+3*x+3=132 equation:


Simplifying
2x * x + 3x + 3 = 132

Multiply x * x
2x2 + 3x + 3 = 132

Reorder the terms:
3 + 3x + 2x2 = 132

Solving
3 + 3x + 2x2 = 132

Solving for variable 'x'.

Reorder the terms:
3 + -132 + 3x + 2x2 = 132 + -132

Combine like terms: 3 + -132 = -129
-129 + 3x + 2x2 = 132 + -132

Combine like terms: 132 + -132 = 0
-129 + 3x + 2x2 = 0

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

Divide each side by '2'.
-64.5 + 1.5x + x2 = 0

Move the constant term to the right:

Add '64.5' to each side of the equation.
-64.5 + 1.5x + 64.5 + x2 = 0 + 64.5

Reorder the terms:
-64.5 + 64.5 + 1.5x + x2 = 0 + 64.5

Combine like terms: -64.5 + 64.5 = 0.0
0.0 + 1.5x + x2 = 0 + 64.5
1.5x + x2 = 0 + 64.5

Combine like terms: 0 + 64.5 = 64.5
1.5x + x2 = 64.5

The x term is 1.5x.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5x + 0.5625 + x2 = 64.5 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = 64.5 + 0.5625

Combine like terms: 64.5 + 0.5625 = 65.0625
0.5625 + 1.5x + x2 = 65.0625

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 65.0625

Calculate the square root of the right side: 8.066132902

Break this problem into two subproblems by setting 
(x + 0.75) equal to 8.066132902 and -8.066132902.

Subproblem 1

x + 0.75 = 8.066132902 Simplifying x + 0.75 = 8.066132902 Reorder the terms: 0.75 + x = 8.066132902 Solving 0.75 + x = 8.066132902 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 8.066132902 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 8.066132902 + -0.75 x = 8.066132902 + -0.75 Combine like terms: 8.066132902 + -0.75 = 7.316132902 x = 7.316132902 Simplifying x = 7.316132902

Subproblem 2

x + 0.75 = -8.066132902 Simplifying x + 0.75 = -8.066132902 Reorder the terms: 0.75 + x = -8.066132902 Solving 0.75 + x = -8.066132902 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -8.066132902 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -8.066132902 + -0.75 x = -8.066132902 + -0.75 Combine like terms: -8.066132902 + -0.75 = -8.816132902 x = -8.816132902 Simplifying x = -8.816132902

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.316132902, -8.816132902}

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