0=q^2+16q-225

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Solution for 0=q^2+16q-225 equation:


Simplifying
0 = q2 + 16q + -225

Reorder the terms:
0 = -225 + 16q + q2

Solving
0 = -225 + 16q + q2

Solving for variable 'q'.

Combine like terms: 0 + 225 = 225
225 + -16q + -1q2 = -225 + 16q + q2 + 225 + -16q + -1q2

Reorder the terms:
225 + -16q + -1q2 = -225 + 225 + 16q + -16q + q2 + -1q2

Combine like terms: -225 + 225 = 0
225 + -16q + -1q2 = 0 + 16q + -16q + q2 + -1q2
225 + -16q + -1q2 = 16q + -16q + q2 + -1q2

Combine like terms: 16q + -16q = 0
225 + -16q + -1q2 = 0 + q2 + -1q2
225 + -16q + -1q2 = q2 + -1q2

Combine like terms: q2 + -1q2 = 0
225 + -16q + -1q2 = 0

Factor a trinomial.
(9 + -1q)(25 + q) = 0

Subproblem 1

Set the factor '(9 + -1q)' equal to zero and attempt to solve: Simplifying 9 + -1q = 0 Solving 9 + -1q = 0 Move all terms containing q to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1q = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1q = 0 + -9 -1q = 0 + -9 Combine like terms: 0 + -9 = -9 -1q = -9 Divide each side by '-1'. q = 9 Simplifying q = 9

Subproblem 2

Set the factor '(25 + q)' equal to zero and attempt to solve: Simplifying 25 + q = 0 Solving 25 + q = 0 Move all terms containing q to the left, all other terms to the right. Add '-25' to each side of the equation. 25 + -25 + q = 0 + -25 Combine like terms: 25 + -25 = 0 0 + q = 0 + -25 q = 0 + -25 Combine like terms: 0 + -25 = -25 q = -25 Simplifying q = -25

Solution

q = {9, -25}

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