121=a*a

Solution for 121=a*a equation:

Simplifying
121 = a * a

Multiply a * a
121 = a2

Solving
121 = a2

Solving for variable 'a'.

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

Add '-1a2' to each side of the equation.
121 + -1a2 = a2 + -1a2

Combine like terms: a2 + -1a2 = 0
121 + -1a2 = 0

Add '-121' to each side of the equation.
121 + -121 + -1a2 = 0 + -121

Combine like terms: 121 + -121 = 0
0 + -1a2 = 0 + -121
-1a2 = 0 + -121

Combine like terms: 0 + -121 = -121
-1a2 = -121

Divide each side by '-1'.
a2 = 121

Simplifying
a2 = 121

Take the square root of each side:
a = {-11, 11}