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Simplifying
-4c2 + 25 = 0
Reorder the terms:
25 + -4c2 = 0
Solving
25 + -4c2 = 0
Solving for variable 'c'.
Move all terms containing c to the left, all other terms to the right.
Add '-25' to each side of the equation.
25 + -25 + -4c2 = 0 + -25
Combine like terms: 25 + -25 = 0
0 + -4c2 = 0 + -25
-4c2 = 0 + -25
Combine like terms: 0 + -25 = -25
-4c2 = -25
Divide each side by '-4'.
c2 = 6.25
Simplifying
c2 = 6.25
Take the square root of each side:
c = {-2.5, 2.5}
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