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Simplifying
49d2 + -4c2 = 0
Reorder the terms:
-4c2 + 49d2 = 0
Solving
-4c2 + 49d2 = 0
Solving for variable 'c'.
Move all terms containing c to the left, all other terms to the right.
Add '-49d2' to each side of the equation.
-4c2 + 49d2 + -49d2 = 0 + -49d2
Combine like terms: 49d2 + -49d2 = 0
-4c2 + 0 = 0 + -49d2
-4c2 = 0 + -49d2
Remove the zero:
-4c2 = -49d2
Divide each side by '-4'.
c2 = 12.25d2
Simplifying
c2 = 12.25d2
Take the square root of each side:
c = {-3.5d, 3.5d}
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