c^2-21=43

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Solution for c^2-21=43 equation: 


Simplifying
c2 + -21 = 43

Reorder the terms:
-21 + c2 = 43

Solving
-21 + c2 = 43

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '21' to each side of the equation.
-21 + 21 + c2 = 43 + 21

Combine like terms: -21 + 21 = 0
0 + c2 = 43 + 21
c2 = 43 + 21

Combine like terms: 43 + 21 = 64
c2 = 64

Simplifying
c2 = 64

Take the square root of each side:
c = {-8, 8}

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