4x^2+33x+60=0

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Solution for 4x^2+33x+60=0 equation: 


Simplifying
4x2 + 33x + 60 = 0

Reorder the terms:
60 + 33x + 4x2 = 0

Solving
60 + 33x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
15 + 8.25x + x2 = 0

Move the constant term to the right:

Add '-15' to each side of the equation.
15 + 8.25x + -15 + x2 = 0 + -15

Reorder the terms:
15 + -15 + 8.25x + x2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 8.25x + x2 = 0 + -15
8.25x + x2 = 0 + -15

Combine like terms: 0 + -15 = -15
8.25x + x2 = -15

The x term is 8.25x.  Take half its coefficient (4.125).
Square it (17.015625) and add it to both sides.

Add '17.015625' to each side of the equation.
8.25x + 17.015625 + x2 = -15 + 17.015625

Reorder the terms:
17.015625 + 8.25x + x2 = -15 + 17.015625

Combine like terms: -15 + 17.015625 = 2.015625
17.015625 + 8.25x + x2 = 2.015625

Factor a perfect square on the left side:
(x + 4.125)(x + 4.125) = 2.015625

Calculate the square root of the right side: 1.419727086

Break this problem into two subproblems by setting 
(x + 4.125) equal to 1.419727086 and -1.419727086.


Subproblem 1
x + 4.125 = 1.419727086

Simplifying
x + 4.125 = 1.419727086

Reorder the terms:
4.125 + x = 1.419727086

Solving
4.125 + x = 1.419727086

Solving for variable 'x'.

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

Add '-4.125' to each side of the equation.
4.125 + -4.125 + x = 1.419727086 + -4.125

Combine like terms: 4.125 + -4.125 = 0.000
0.000 + x = 1.419727086 + -4.125
x = 1.419727086 + -4.125

Combine like terms: 1.419727086 + -4.125 = -2.705272914
x = -2.705272914

Simplifying
x = -2.705272914


Subproblem 2
x + 4.125 = -1.419727086

Simplifying
x + 4.125 = -1.419727086

Reorder the terms:
4.125 + x = -1.419727086

Solving
4.125 + x = -1.419727086

Solving for variable 'x'.

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

Add '-4.125' to each side of the equation.
4.125 + -4.125 + x = -1.419727086 + -4.125

Combine like terms: 4.125 + -4.125 = 0.000
0.000 + x = -1.419727086 + -4.125
x = -1.419727086 + -4.125

Combine like terms: -1.419727086 + -4.125 = -5.544727086
x = -5.544727086

Simplifying
x = -5.544727086


Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {-2.705272914, -5.544727086}

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