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Simplifying
3c2 + 5 = 17
Reorder the terms:
5 + 3c2 = 17
Solving
5 + 3c2 = 17
Solving for variable 'c'.
Move all terms containing c to the left, all other terms to the right.
Add '-5' to each side of the equation.
5 + -5 + 3c2 = 17 + -5
Combine like terms: 5 + -5 = 0
0 + 3c2 = 17 + -5
3c2 = 17 + -5
Combine like terms: 17 + -5 = 12
3c2 = 12
Divide each side by '3'.
c2 = 4
Simplifying
c2 = 4
Take the square root of each side:
c = {-2, 2}
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