g^2-2g-47=0

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Solution for g^2-2g-47=0 equation:


Simplifying
g2 + -2g + -47 = 0

Reorder the terms:
-47 + -2g + g2 = 0

Solving
-47 + -2g + g2 = 0

Solving for variable 'g'.

Begin completing the square.

Move the constant term to the right:

Add '47' to each side of the equation.
-47 + -2g + 47 + g2 = 0 + 47

Reorder the terms:
-47 + 47 + -2g + g2 = 0 + 47

Combine like terms: -47 + 47 = 0
0 + -2g + g2 = 0 + 47
-2g + g2 = 0 + 47

Combine like terms: 0 + 47 = 47
-2g + g2 = 47

The g term is -2g.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2g + 1 + g2 = 47 + 1

Reorder the terms:
1 + -2g + g2 = 47 + 1

Combine like terms: 47 + 1 = 48
1 + -2g + g2 = 48

Factor a perfect square on the left side:
(g + -1)(g + -1) = 48

Calculate the square root of the right side: 6.92820323

Break this problem into two subproblems by setting 
(g + -1) equal to 6.92820323 and -6.92820323.

Subproblem 1

g + -1 = 6.92820323 Simplifying g + -1 = 6.92820323 Reorder the terms: -1 + g = 6.92820323 Solving -1 + g = 6.92820323 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + g = 6.92820323 + 1 Combine like terms: -1 + 1 = 0 0 + g = 6.92820323 + 1 g = 6.92820323 + 1 Combine like terms: 6.92820323 + 1 = 7.92820323 g = 7.92820323 Simplifying g = 7.92820323

Subproblem 2

g + -1 = -6.92820323 Simplifying g + -1 = -6.92820323 Reorder the terms: -1 + g = -6.92820323 Solving -1 + g = -6.92820323 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + g = -6.92820323 + 1 Combine like terms: -1 + 1 = 0 0 + g = -6.92820323 + 1 g = -6.92820323 + 1 Combine like terms: -6.92820323 + 1 = -5.92820323 g = -5.92820323 Simplifying g = -5.92820323

Solution

The solution to the problem is based on the solutions from the subproblems. g = {7.92820323, -5.92820323}

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