5x^2+4x-37=0

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Solution for 5x^2+4x-37=0 equation:


Simplifying
5x2 + 4x + -37 = 0

Reorder the terms:
-37 + 4x + 5x2 = 0

Solving
-37 + 4x + 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'.
-7.4 + 0.8x + x2 = 0

Move the constant term to the right:

Add '7.4' to each side of the equation.
-7.4 + 0.8x + 7.4 + x2 = 0 + 7.4

Reorder the terms:
-7.4 + 7.4 + 0.8x + x2 = 0 + 7.4

Combine like terms: -7.4 + 7.4 = 0.0
0.0 + 0.8x + x2 = 0 + 7.4
0.8x + x2 = 0 + 7.4

Combine like terms: 0 + 7.4 = 7.4
0.8x + x2 = 7.4

The x term is 0.8x.  Take half its coefficient (0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
0.8x + 0.16 + x2 = 7.4 + 0.16

Reorder the terms:
0.16 + 0.8x + x2 = 7.4 + 0.16

Combine like terms: 7.4 + 0.16 = 7.56
0.16 + 0.8x + x2 = 7.56

Factor a perfect square on the left side:
(x + 0.4)(x + 0.4) = 7.56

Calculate the square root of the right side: 2.749545417

Break this problem into two subproblems by setting 
(x + 0.4) equal to 2.749545417 and -2.749545417.

Subproblem 1

x + 0.4 = 2.749545417 Simplifying x + 0.4 = 2.749545417 Reorder the terms: 0.4 + x = 2.749545417 Solving 0.4 + x = 2.749545417 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4' to each side of the equation. 0.4 + -0.4 + x = 2.749545417 + -0.4 Combine like terms: 0.4 + -0.4 = 0.0 0.0 + x = 2.749545417 + -0.4 x = 2.749545417 + -0.4 Combine like terms: 2.749545417 + -0.4 = 2.349545417 x = 2.349545417 Simplifying x = 2.349545417

Subproblem 2

x + 0.4 = -2.749545417 Simplifying x + 0.4 = -2.749545417 Reorder the terms: 0.4 + x = -2.749545417 Solving 0.4 + x = -2.749545417 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4' to each side of the equation. 0.4 + -0.4 + x = -2.749545417 + -0.4 Combine like terms: 0.4 + -0.4 = 0.0 0.0 + x = -2.749545417 + -0.4 x = -2.749545417 + -0.4 Combine like terms: -2.749545417 + -0.4 = -3.149545417 x = -3.149545417 Simplifying x = -3.149545417

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.349545417, -3.149545417}

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