Write with only positive exponents.

(3x^2 y) (-2x^-2 y)

I got -6x^2 y^2

But the teacher got -6y^2

I don't understand how he got that

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- October 1st 2011, 01:32 PMCandy101positive exponents
Write with only positive exponents.

(3x^2 y) (-2x^-2 y)

I got -6x^2 y^2

But the teacher got -6y^2

I don't understand how he got that - October 1st 2011, 01:35 PMPlatoRe: positive exponents
- October 1st 2011, 02:19 PMCandy101Re: positive exponents
Oh I see Wht I did wrong. I forgot about the x^-2 . Which cancels out!

Thanks

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

For this one I can't understand why he got -4y^6/x^4

I got -4x^-4 y^-6

I know I have to flip it

So y can't I get

y^6 / 4x^4 - October 1st 2011, 02:24 PMQuackyRe: positive exponents
- October 1st 2011, 02:37 PMPlatoRe: positive exponents
- October 1st 2011, 02:38 PMCandy101Re: positive exponents
Yeah

- October 2nd 2011, 06:32 AMHallsofIvyRe: positive exponents