7g^2+2g-3=0

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Solution for 7g^2+2g-3=0 equation:


Simplifying
7g2 + 2g + -3 = 0

Reorder the terms:
-3 + 2g + 7g2 = 0

Solving
-3 + 2g + 7g2 = 0

Solving for variable 'g'.

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

Divide each side by '7'.
-0.4285714286 + 0.2857142857g + g2 = 0

Move the constant term to the right:

Add '0.4285714286' to each side of the equation.
-0.4285714286 + 0.2857142857g + 0.4285714286 + g2 = 0 + 0.4285714286

Reorder the terms:
-0.4285714286 + 0.4285714286 + 0.2857142857g + g2 = 0 + 0.4285714286

Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000
0.0000000000 + 0.2857142857g + g2 = 0 + 0.4285714286
0.2857142857g + g2 = 0 + 0.4285714286

Combine like terms: 0 + 0.4285714286 = 0.4285714286
0.2857142857g + g2 = 0.4285714286

The g term is 0.2857142857g.  Take half its coefficient (0.1428571429).
Square it (0.02040816328) and add it to both sides.

Add '0.02040816328' to each side of the equation.
0.2857142857g + 0.02040816328 + g2 = 0.4285714286 + 0.02040816328

Reorder the terms:
0.02040816328 + 0.2857142857g + g2 = 0.4285714286 + 0.02040816328

Combine like terms: 0.4285714286 + 0.02040816328 = 0.44897959188
0.02040816328 + 0.2857142857g + g2 = 0.44897959188

Factor a perfect square on the left side:
(g + 0.1428571429)(g + 0.1428571429) = 0.44897959188

Calculate the square root of the right side: 0.670059394

Break this problem into two subproblems by setting 
(g + 0.1428571429) equal to 0.670059394 and -0.670059394.

Subproblem 1

g + 0.1428571429 = 0.670059394 Simplifying g + 0.1428571429 = 0.670059394 Reorder the terms: 0.1428571429 + g = 0.670059394 Solving 0.1428571429 + g = 0.670059394 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '-0.1428571429' to each side of the equation. 0.1428571429 + -0.1428571429 + g = 0.670059394 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + g = 0.670059394 + -0.1428571429 g = 0.670059394 + -0.1428571429 Combine like terms: 0.670059394 + -0.1428571429 = 0.5272022511 g = 0.5272022511 Simplifying g = 0.5272022511

Subproblem 2

g + 0.1428571429 = -0.670059394 Simplifying g + 0.1428571429 = -0.670059394 Reorder the terms: 0.1428571429 + g = -0.670059394 Solving 0.1428571429 + g = -0.670059394 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '-0.1428571429' to each side of the equation. 0.1428571429 + -0.1428571429 + g = -0.670059394 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + g = -0.670059394 + -0.1428571429 g = -0.670059394 + -0.1428571429 Combine like terms: -0.670059394 + -0.1428571429 = -0.8129165369 g = -0.8129165369 Simplifying g = -0.8129165369

Solution

The solution to the problem is based on the solutions from the subproblems. g = {0.5272022511, -0.8129165369}

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