g^2+16g+45=0

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Solution for g^2+16g+45=0 equation:


Simplifying
g2 + 16g + 45 = 0

Reorder the terms:
45 + 16g + g2 = 0

Solving
45 + 16g + g2 = 0

Solving for variable 'g'.

Begin completing the square.

Move the constant term to the right:

Add '-45' to each side of the equation.
45 + 16g + -45 + g2 = 0 + -45

Reorder the terms:
45 + -45 + 16g + g2 = 0 + -45

Combine like terms: 45 + -45 = 0
0 + 16g + g2 = 0 + -45
16g + g2 = 0 + -45

Combine like terms: 0 + -45 = -45
16g + g2 = -45

The g term is 16g.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16g + 64 + g2 = -45 + 64

Reorder the terms:
64 + 16g + g2 = -45 + 64

Combine like terms: -45 + 64 = 19
64 + 16g + g2 = 19

Factor a perfect square on the left side:
(g + 8)(g + 8) = 19

Calculate the square root of the right side: 4.358898944

Break this problem into two subproblems by setting 
(g + 8) equal to 4.358898944 and -4.358898944.

Subproblem 1

g + 8 = 4.358898944 Simplifying g + 8 = 4.358898944 Reorder the terms: 8 + g = 4.358898944 Solving 8 + g = 4.358898944 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + g = 4.358898944 + -8 Combine like terms: 8 + -8 = 0 0 + g = 4.358898944 + -8 g = 4.358898944 + -8 Combine like terms: 4.358898944 + -8 = -3.641101056 g = -3.641101056 Simplifying g = -3.641101056

Subproblem 2

g + 8 = -4.358898944 Simplifying g + 8 = -4.358898944 Reorder the terms: 8 + g = -4.358898944 Solving 8 + g = -4.358898944 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + g = -4.358898944 + -8 Combine like terms: 8 + -8 = 0 0 + g = -4.358898944 + -8 g = -4.358898944 + -8 Combine like terms: -4.358898944 + -8 = -12.358898944 g = -12.358898944 Simplifying g = -12.358898944

Solution

The solution to the problem is based on the solutions from the subproblems. g = {-3.641101056, -12.358898944}

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