Thread: Help with Indices

Having some problems with simplifying these 2 equations. Can anyone help me? Thanks ...

1.

(x+y)^-1 + (x-y)^-1


2.

(27x^2)^1/3 / 1/3(x^3)^1/2

Thanks again.

Originally Posted by slippy1

Having some problems with simplifying these 2 equations. Can anyone help me? Thanks ...

1.

(x+y)^-1 + (x-y)^-1


2.

(27x^2)^1/3 / 1/3(x^3)^1/2

Thanks again.

Q1: Make the denominators the same, and simplify the numerator.

Q2: Multiply the powers into the brackets and then simplify.

Originally Posted by knighty

Q1: Make the denominators the same, and simplify the numerator.

Q2: Multiply the powers into the brackets and then simplify.

Just to expand slightly on what's been said for Q1, first note that .