I am trying to work out standard deviations and have to square numbers I am getting two different answers if I use the X2 square function it comes out as a negative if I just times the number by itself it comes out positive which one is right
-0.2 X -0.2 =
+33661 "I am trying to work out standard deviations and have to square numbers I am getting two different answers if I use the X2 square function it comes out as a negative if I just times the number by itself it comes out positive which one is right"
-22 = -4 because exponentiation takes priority over negation
(-2)2 = +4 because parentheses take highest priority
So -2 x -2 = +4 because -2 x -2 is the same as (-2)2
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