3c^2-360=21c

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Solution for 3c^2-360=21c equation:


Simplifying
3c2 + -360 = 21c

Reorder the terms:
-360 + 3c2 = 21c

Solving
-360 + 3c2 = 21c

Solving for variable 'c'.

Reorder the terms:
-360 + -21c + 3c2 = 21c + -21c

Combine like terms: 21c + -21c = 0
-360 + -21c + 3c2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-120 + -7c + c2) = 0

Factor a trinomial.
3((-8 + -1c)(15 + -1c)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-8 + -1c)' equal to zero and attempt to solve: Simplifying -8 + -1c = 0 Solving -8 + -1c = 0 Move all terms containing c to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -1c = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1c = 0 + 8 -1c = 0 + 8 Combine like terms: 0 + 8 = 8 -1c = 8 Divide each side by '-1'. c = -8 Simplifying c = -8

Subproblem 2

Set the factor '(15 + -1c)' equal to zero and attempt to solve: Simplifying 15 + -1c = 0 Solving 15 + -1c = 0 Move all terms containing c to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -1c = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1c = 0 + -15 -1c = 0 + -15 Combine like terms: 0 + -15 = -15 -1c = -15 Divide each side by '-1'. c = 15 Simplifying c = 15

Solution

c = {-8, 15}

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