m*m-1=20

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Solution for m*m-1=20 equation: 


Simplifying
m * m + -1 = 20

Multiply m * m
m2 + -1 = 20

Reorder the terms:
-1 + m2 = 20

Solving
-1 + m2 = 20

Solving for variable 'm'.

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

Add '1' to each side of the equation.
-1 + 1 + m2 = 20 + 1

Combine like terms: -1 + 1 = 0
0 + m2 = 20 + 1
m2 = 20 + 1

Combine like terms: 20 + 1 = 21
m2 = 21

Simplifying
m2 = 21

Take the square root of each side:
m = {-4.582575695, 4.582575695}

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