m*m=.81

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Solution for m*m=.81 equation: 


Simplifying
m * m = 0.81

Multiply m * m
m2 = 0.81

Solving
m2 = 0.81

Solving for variable 'm'.

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

Simplifying
m2 = 0.81

Take the square root of each side:
m = {-0.9, 0.9}

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