-5g(-8+g)=12

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Solution for -5g(-8+g)=12 equation:


Simplifying
-5g(-8 + g) = 12
(-8 * -5g + g * -5g) = 12
(40g + -5g2) = 12

Solving
40g + -5g2 = 12

Solving for variable 'g'.

Reorder the terms:
-12 + 40g + -5g2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + 40g + -5g2 = 0

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

Divide each side by '-5'.
2.4 + -8g + g2 = 0

Move the constant term to the right:

Add '-2.4' to each side of the equation.
2.4 + -8g + -2.4 + g2 = 0 + -2.4

Reorder the terms:
2.4 + -2.4 + -8g + g2 = 0 + -2.4

Combine like terms: 2.4 + -2.4 = 0.0
0.0 + -8g + g2 = 0 + -2.4
-8g + g2 = 0 + -2.4

Combine like terms: 0 + -2.4 = -2.4
-8g + g2 = -2.4

The g term is -8g.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8g + 16 + g2 = -2.4 + 16

Reorder the terms:
16 + -8g + g2 = -2.4 + 16

Combine like terms: -2.4 + 16 = 13.6
16 + -8g + g2 = 13.6

Factor a perfect square on the left side:
(g + -4)(g + -4) = 13.6

Calculate the square root of the right side: 3.687817783

Break this problem into two subproblems by setting 
(g + -4) equal to 3.687817783 and -3.687817783.

Subproblem 1

g + -4 = 3.687817783 Simplifying g + -4 = 3.687817783 Reorder the terms: -4 + g = 3.687817783 Solving -4 + g = 3.687817783 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + g = 3.687817783 + 4 Combine like terms: -4 + 4 = 0 0 + g = 3.687817783 + 4 g = 3.687817783 + 4 Combine like terms: 3.687817783 + 4 = 7.687817783 g = 7.687817783 Simplifying g = 7.687817783

Subproblem 2

g + -4 = -3.687817783 Simplifying g + -4 = -3.687817783 Reorder the terms: -4 + g = -3.687817783 Solving -4 + g = -3.687817783 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + g = -3.687817783 + 4 Combine like terms: -4 + 4 = 0 0 + g = -3.687817783 + 4 g = -3.687817783 + 4 Combine like terms: -3.687817783 + 4 = 0.312182217 g = 0.312182217 Simplifying g = 0.312182217

Solution

The solution to the problem is based on the solutions from the subproblems. g = {7.687817783, 0.312182217}

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