Question from cookie, a student:

(2.50x^-3) - (3.0x^-1) please show me how to do this. The answer in the book is 7.5 x ^-4

Hi Cookie,

There is an error in the statement of the problem, it should be

simplify (2.50x^{-3}) (3.0x^{-1})

Can you do it now? Penny