5x^2+37x+20=0

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Solution for 5x^2+37x+20=0 equation:


Simplifying
5x2 + 37x + 20 = 0

Reorder the terms:
20 + 37x + 5x2 = 0

Solving
20 + 37x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
4 + 7.4x + x2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 7.4x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + 7.4x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 7.4x + x2 = 0 + -4
7.4x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
7.4x + x2 = -4

The x term is 7.4x.  Take half its coefficient (3.7).
Square it (13.69) and add it to both sides.

Add '13.69' to each side of the equation.
7.4x + 13.69 + x2 = -4 + 13.69

Reorder the terms:
13.69 + 7.4x + x2 = -4 + 13.69

Combine like terms: -4 + 13.69 = 9.69
13.69 + 7.4x + x2 = 9.69

Factor a perfect square on the left side:
(x + 3.7)(x + 3.7) = 9.69

Calculate the square root of the right side: 3.112876483

Break this problem into two subproblems by setting 
(x + 3.7) equal to 3.112876483 and -3.112876483.

Subproblem 1

x + 3.7 = 3.112876483 Simplifying x + 3.7 = 3.112876483 Reorder the terms: 3.7 + x = 3.112876483 Solving 3.7 + x = 3.112876483 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.7' to each side of the equation. 3.7 + -3.7 + x = 3.112876483 + -3.7 Combine like terms: 3.7 + -3.7 = 0.0 0.0 + x = 3.112876483 + -3.7 x = 3.112876483 + -3.7 Combine like terms: 3.112876483 + -3.7 = -0.587123517 x = -0.587123517 Simplifying x = -0.587123517

Subproblem 2

x + 3.7 = -3.112876483 Simplifying x + 3.7 = -3.112876483 Reorder the terms: 3.7 + x = -3.112876483 Solving 3.7 + x = -3.112876483 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.7' to each side of the equation. 3.7 + -3.7 + x = -3.112876483 + -3.7 Combine like terms: 3.7 + -3.7 = 0.0 0.0 + x = -3.112876483 + -3.7 x = -3.112876483 + -3.7 Combine like terms: -3.112876483 + -3.7 = -6.812876483 x = -6.812876483 Simplifying x = -6.812876483

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.587123517, -6.812876483}

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