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Simplifying
9c2 + -4c2 + 2c2 = 0
Combine like terms: 9c2 + -4c2 = 5c2
5c2 + 2c2 = 0
Combine like terms: 5c2 + 2c2 = 7c2
7c2 = 0
Solving
7c2 = 0
Solving for variable 'c'.
Move all terms containing c to the left, all other terms to the right.
Divide each side by '7'.
c2 = 0
Simplifying
c2 = 0
Take the square root of each side:
c = {0}
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