Homework Help: Math

Posted by Amy~ on Sunday, September 5, 2010 at 2:13pm.

x = 3

-2x^(2) / (1/3)^(-x)

how to solve?

would I multiply 3(-2) than square?
Also, when I move (1/3)^(-3) to the numerator would it become (3)^3

Math - Reiny, Sunday, September 5, 2010 at 2:59pm
-2x^(2) / (1/3)^(-x)
when x = 3 I get

-2(9)/(1/3)^-3
= -18(1/3)^+3
= -18(1/27)
= -2/3

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