Question

Express 3a 2 b -1 with positive exponents.

Answer 1

@phi I need some help :(

Answer 2

you should use ^ to show exponents...
I assume you mean
3 a^2 b^(-1)

?

to get rid of negative exponents, "flip" the expression.

for example:

3^(-2) is the same as 1/(3^2)

and 1/(3^-2) is the same as 3^2

Answer 3

Thank you that was very helpfull :)