9q^2-4q=8q^2-8q+45

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Solution for 9q^2-4q=8q^2-8q+45 equation:


Simplifying
9q2 + -4q = 8q2 + -8q + 45

Reorder the terms:
-4q + 9q2 = 8q2 + -8q + 45

Reorder the terms:
-4q + 9q2 = 45 + -8q + 8q2

Solving
-4q + 9q2 = 45 + -8q + 8q2

Solving for variable 'q'.

Reorder the terms:
-45 + -4q + 8q + 9q2 + -8q2 = 45 + -8q + 8q2 + -45 + 8q + -8q2

Combine like terms: -4q + 8q = 4q
-45 + 4q + 9q2 + -8q2 = 45 + -8q + 8q2 + -45 + 8q + -8q2

Combine like terms: 9q2 + -8q2 = 1q2
-45 + 4q + 1q2 = 45 + -8q + 8q2 + -45 + 8q + -8q2

Reorder the terms:
-45 + 4q + 1q2 = 45 + -45 + -8q + 8q + 8q2 + -8q2

Combine like terms: 45 + -45 = 0
-45 + 4q + 1q2 = 0 + -8q + 8q + 8q2 + -8q2
-45 + 4q + 1q2 = -8q + 8q + 8q2 + -8q2

Combine like terms: -8q + 8q = 0
-45 + 4q + 1q2 = 0 + 8q2 + -8q2
-45 + 4q + 1q2 = 8q2 + -8q2

Combine like terms: 8q2 + -8q2 = 0
-45 + 4q + 1q2 = 0

Factor a trinomial.
(-9 + -1q)(5 + -1q) = 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 '(5 + -1q)' equal to zero and attempt to solve: Simplifying 5 + -1q = 0 Solving 5 + -1q = 0 Move all terms containing q to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1q = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1q = 0 + -5 -1q = 0 + -5 Combine like terms: 0 + -5 = -5 -1q = -5 Divide each side by '-1'. q = 5 Simplifying q = 5

Solution

q = {-9, 5}

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