900-q^2=10q+300

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Solution for 900-q^2=10q+300 equation:


Simplifying
900 + -1q2 = 10q + 300

Reorder the terms:
900 + -1q2 = 300 + 10q

Solving
900 + -1q2 = 300 + 10q

Solving for variable 'q'.

Reorder the terms:
900 + -300 + -10q + -1q2 = 300 + 10q + -300 + -10q

Combine like terms: 900 + -300 = 600
600 + -10q + -1q2 = 300 + 10q + -300 + -10q

Reorder the terms:
600 + -10q + -1q2 = 300 + -300 + 10q + -10q

Combine like terms: 300 + -300 = 0
600 + -10q + -1q2 = 0 + 10q + -10q
600 + -10q + -1q2 = 10q + -10q

Combine like terms: 10q + -10q = 0
600 + -10q + -1q2 = 0

Factor a trinomial.
(20 + -1q)(30 + q) = 0

Subproblem 1

Set the factor '(20 + -1q)' equal to zero and attempt to solve: Simplifying 20 + -1q = 0 Solving 20 + -1q = 0 Move all terms containing q to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -1q = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -1q = 0 + -20 -1q = 0 + -20 Combine like terms: 0 + -20 = -20 -1q = -20 Divide each side by '-1'. q = 20 Simplifying q = 20

Subproblem 2

Set the factor '(30 + q)' equal to zero and attempt to solve: Simplifying 30 + q = 0 Solving 30 + q = 0 Move all terms containing q to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + q = 0 + -30 Combine like terms: 30 + -30 = 0 0 + q = 0 + -30 q = 0 + -30 Combine like terms: 0 + -30 = -30 q = -30 Simplifying q = -30

Solution

q = {20, -30}

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