g^2+5g-56=0

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Solution for g^2+5g-56=0 equation:


Simplifying
g2 + 5g + -56 = 0

Reorder the terms:
-56 + 5g + g2 = 0

Solving
-56 + 5g + g2 = 0

Solving for variable 'g'.

Begin completing the square.

Move the constant term to the right:

Add '56' to each side of the equation.
-56 + 5g + 56 + g2 = 0 + 56

Reorder the terms:
-56 + 56 + 5g + g2 = 0 + 56

Combine like terms: -56 + 56 = 0
0 + 5g + g2 = 0 + 56
5g + g2 = 0 + 56

Combine like terms: 0 + 56 = 56
5g + g2 = 56

The g term is 5g.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5g + 6.25 + g2 = 56 + 6.25

Reorder the terms:
6.25 + 5g + g2 = 56 + 6.25

Combine like terms: 56 + 6.25 = 62.25
6.25 + 5g + g2 = 62.25

Factor a perfect square on the left side:
(g + 2.5)(g + 2.5) = 62.25

Calculate the square root of the right side: 7.889866919

Break this problem into two subproblems by setting 
(g + 2.5) equal to 7.889866919 and -7.889866919.

Subproblem 1

g + 2.5 = 7.889866919 Simplifying g + 2.5 = 7.889866919 Reorder the terms: 2.5 + g = 7.889866919 Solving 2.5 + g = 7.889866919 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + g = 7.889866919 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + g = 7.889866919 + -2.5 g = 7.889866919 + -2.5 Combine like terms: 7.889866919 + -2.5 = 5.389866919 g = 5.389866919 Simplifying g = 5.389866919

Subproblem 2

g + 2.5 = -7.889866919 Simplifying g + 2.5 = -7.889866919 Reorder the terms: 2.5 + g = -7.889866919 Solving 2.5 + g = -7.889866919 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + g = -7.889866919 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + g = -7.889866919 + -2.5 g = -7.889866919 + -2.5 Combine like terms: -7.889866919 + -2.5 = -10.389866919 g = -10.389866919 Simplifying g = -10.389866919

Solution

The solution to the problem is based on the solutions from the subproblems. g = {5.389866919, -10.389866919}

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