g^2-0.7g=7

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Solution for g^2-0.7g=7 equation:


Simplifying
g2 + -0.7g = 7

Reorder the terms:
-0.7g + g2 = 7

Solving
-0.7g + g2 = 7

Solving for variable 'g'.

Reorder the terms:
-7 + -0.7g + g2 = 7 + -7

Combine like terms: 7 + -7 = 0
-7 + -0.7g + g2 = 0

Begin completing the square.

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -0.7g + 7 + g2 = 0 + 7

Reorder the terms:
-7 + 7 + -0.7g + g2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -0.7g + g2 = 0 + 7
-0.7g + g2 = 0 + 7

Combine like terms: 0 + 7 = 7
-0.7g + g2 = 7

The g term is -0.7g.  Take half its coefficient (-0.35).
Square it (0.1225) and add it to both sides.

Add '0.1225' to each side of the equation.
-0.7g + 0.1225 + g2 = 7 + 0.1225

Reorder the terms:
0.1225 + -0.7g + g2 = 7 + 0.1225

Combine like terms: 7 + 0.1225 = 7.1225
0.1225 + -0.7g + g2 = 7.1225

Factor a perfect square on the left side:
(g + -0.35)(g + -0.35) = 7.1225

Calculate the square root of the right side: 2.668801229

Break this problem into two subproblems by setting 
(g + -0.35) equal to 2.668801229 and -2.668801229.

Subproblem 1

g + -0.35 = 2.668801229 Simplifying g + -0.35 = 2.668801229 Reorder the terms: -0.35 + g = 2.668801229 Solving -0.35 + g = 2.668801229 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '0.35' to each side of the equation. -0.35 + 0.35 + g = 2.668801229 + 0.35 Combine like terms: -0.35 + 0.35 = 0.00 0.00 + g = 2.668801229 + 0.35 g = 2.668801229 + 0.35 Combine like terms: 2.668801229 + 0.35 = 3.018801229 g = 3.018801229 Simplifying g = 3.018801229

Subproblem 2

g + -0.35 = -2.668801229 Simplifying g + -0.35 = -2.668801229 Reorder the terms: -0.35 + g = -2.668801229 Solving -0.35 + g = -2.668801229 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '0.35' to each side of the equation. -0.35 + 0.35 + g = -2.668801229 + 0.35 Combine like terms: -0.35 + 0.35 = 0.00 0.00 + g = -2.668801229 + 0.35 g = -2.668801229 + 0.35 Combine like terms: -2.668801229 + 0.35 = -2.318801229 g = -2.318801229 Simplifying g = -2.318801229

Solution

The solution to the problem is based on the solutions from the subproblems. g = {3.018801229, -2.318801229}

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