M^2-13=68

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Solution for M^2-13=68 equation: 


Simplifying
M2 + -13 = 68

Reorder the terms:
-13 + M2 = 68

Solving
-13 + M2 = 68

Solving for variable 'M'.

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

Add '13' to each side of the equation.
-13 + 13 + M2 = 68 + 13

Combine like terms: -13 + 13 = 0
0 + M2 = 68 + 13
M2 = 68 + 13

Combine like terms: 68 + 13 = 81
M2 = 81

Simplifying
M2 = 81

Take the square root of each side:
M = {-9, 9}

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