## anonymous 4 years ago Multiply the expressions, and simplify. (-10x^-5y^-2) · (-9x^-4y)

1. precal

I do not think you wrote the problem correctly. Please use the equation key on the lower left to input

2. anonymous

$(−10x ^{-5} y ^{-2} )⋅(−9x ^{-4})$

3. Mertsj

$90x ^{-9}y ^{-2}= \frac{90}{x ^{9}y ^{2}}$

4. Mertsj

is this the problem you wanted help with?

5. Mertsj

Also is there supposed to be a y after the x^-4?

6. anonymous

yes sorry

7. anonymous

there is a y after that

8. Mertsj

So then the answer is :$\frac{90}{x ^{9}y}$

9. anonymous

90x^-1y^-3 90(xy)^-10 10x-^9y^-1 90x^-9y^-1 this are the ansers it gave me

10. Mertsj

Well, the answer I gave you is the same thing. They just wrote theirs with negative exponents. If you move x^9 to the numerator, it will be x^-9. if you move y^1 to the numerator, it will be y^-1