400+441=c^2

Solution for 400+441=c^2 equation:

Simplifying
400 + 441 = c2

Combine like terms: 400 + 441 = 841
841 = c2

Solving
841 = c2

Solving for variable 'c'.

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

Add '-1c2' to each side of the equation.
841 + -1c2 = c2 + -1c2

Combine like terms: c2 + -1c2 = 0
841 + -1c2 = 0

Add '-841' to each side of the equation.
841 + -841 + -1c2 = 0 + -841

Combine like terms: 841 + -841 = 0
0 + -1c2 = 0 + -841
-1c2 = 0 + -841

Combine like terms: 0 + -841 = -841
-1c2 = -841

Divide each side by '-1'.
c2 = 841

Simplifying
c2 = 841

Take the square root of each side:
c = {-29, 29}