9c^2=30-39c

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Solution for 9c^2=30-39c equation:


Simplifying
9c2 = 30 + -39c

Solving
9c2 = 30 + -39c

Solving for variable 'c'.

Reorder the terms:
-30 + 39c + 9c2 = 30 + -39c + -30 + 39c

Reorder the terms:
-30 + 39c + 9c2 = 30 + -30 + -39c + 39c

Combine like terms: 30 + -30 = 0
-30 + 39c + 9c2 = 0 + -39c + 39c
-30 + 39c + 9c2 = -39c + 39c

Combine like terms: -39c + 39c = 0
-30 + 39c + 9c2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-10 + 13c + 3c2) = 0

Factor a trinomial.
3((-5 + -1c)(2 + -3c)) = 0

Ignore the factor 3.

Subproblem 1

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

Subproblem 2

Set the factor '(2 + -3c)' equal to zero and attempt to solve: Simplifying 2 + -3c = 0 Solving 2 + -3c = 0 Move all terms containing c to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -3c = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -3c = 0 + -2 -3c = 0 + -2 Combine like terms: 0 + -2 = -2 -3c = -2 Divide each side by '-3'. c = 0.6666666667 Simplifying c = 0.6666666667

Solution

c = {-5, 0.6666666667}

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