a^2=1.21

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Solution for a^2=1.21 equation: 


Simplifying
a2 = 1.21

Solving
a2 = 1.21

Solving for variable 'a'.

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

Simplifying
a2 = 1.21

Take the square root of each side:
a = {-1.1, 1.1}

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