g^2-28g=-9

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Solution for g^2-28g=-9 equation:


Simplifying
g2 + -28g = -9

Reorder the terms:
-28g + g2 = -9

Solving
-28g + g2 = -9

Solving for variable 'g'.

Reorder the terms:
9 + -28g + g2 = -9 + 9

Combine like terms: -9 + 9 = 0
9 + -28g + g2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + -28g + -9 + g2 = 0 + -9

Reorder the terms:
9 + -9 + -28g + g2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -28g + g2 = 0 + -9
-28g + g2 = 0 + -9

Combine like terms: 0 + -9 = -9
-28g + g2 = -9

The g term is -28g.  Take half its coefficient (-14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
-28g + 196 + g2 = -9 + 196

Reorder the terms:
196 + -28g + g2 = -9 + 196

Combine like terms: -9 + 196 = 187
196 + -28g + g2 = 187

Factor a perfect square on the left side:
(g + -14)(g + -14) = 187

Calculate the square root of the right side: 13.674794331

Break this problem into two subproblems by setting 
(g + -14) equal to 13.674794331 and -13.674794331.

Subproblem 1

g + -14 = 13.674794331 Simplifying g + -14 = 13.674794331 Reorder the terms: -14 + g = 13.674794331 Solving -14 + g = 13.674794331 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + g = 13.674794331 + 14 Combine like terms: -14 + 14 = 0 0 + g = 13.674794331 + 14 g = 13.674794331 + 14 Combine like terms: 13.674794331 + 14 = 27.674794331 g = 27.674794331 Simplifying g = 27.674794331

Subproblem 2

g + -14 = -13.674794331 Simplifying g + -14 = -13.674794331 Reorder the terms: -14 + g = -13.674794331 Solving -14 + g = -13.674794331 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + g = -13.674794331 + 14 Combine like terms: -14 + 14 = 0 0 + g = -13.674794331 + 14 g = -13.674794331 + 14 Combine like terms: -13.674794331 + 14 = 0.325205669 g = 0.325205669 Simplifying g = 0.325205669

Solution

The solution to the problem is based on the solutions from the subproblems. g = {27.674794331, 0.325205669}

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