900-16q-q^2=0

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Solution for 900-16q-q^2=0 equation:


Simplifying
900 + -16q + -1q2 = 0

Solving
900 + -16q + -1q2 = 0

Solving for variable 'q'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-900 + 16q + q2 = 0

Move the constant term to the right:

Add '900' to each side of the equation.
-900 + 16q + 900 + q2 = 0 + 900

Reorder the terms:
-900 + 900 + 16q + q2 = 0 + 900

Combine like terms: -900 + 900 = 0
0 + 16q + q2 = 0 + 900
16q + q2 = 0 + 900

Combine like terms: 0 + 900 = 900
16q + q2 = 900

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

Add '64' to each side of the equation.
16q + 64 + q2 = 900 + 64

Reorder the terms:
64 + 16q + q2 = 900 + 64

Combine like terms: 900 + 64 = 964
64 + 16q + q2 = 964

Factor a perfect square on the left side:
(q + 8)(q + 8) = 964

Calculate the square root of the right side: 31.048349393

Break this problem into two subproblems by setting 
(q + 8) equal to 31.048349393 and -31.048349393.

Subproblem 1

q + 8 = 31.048349393 Simplifying q + 8 = 31.048349393 Reorder the terms: 8 + q = 31.048349393 Solving 8 + q = 31.048349393 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + q = 31.048349393 + -8 Combine like terms: 8 + -8 = 0 0 + q = 31.048349393 + -8 q = 31.048349393 + -8 Combine like terms: 31.048349393 + -8 = 23.048349393 q = 23.048349393 Simplifying q = 23.048349393

Subproblem 2

q + 8 = -31.048349393 Simplifying q + 8 = -31.048349393 Reorder the terms: 8 + q = -31.048349393 Solving 8 + q = -31.048349393 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + q = -31.048349393 + -8 Combine like terms: 8 + -8 = 0 0 + q = -31.048349393 + -8 q = -31.048349393 + -8 Combine like terms: -31.048349393 + -8 = -39.048349393 q = -39.048349393 Simplifying q = -39.048349393

Solution

The solution to the problem is based on the solutions from the subproblems. q = {23.048349393, -39.048349393}

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