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

Question

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

precal · Answer

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

anonymous · Answer

$$(−10x ^{-5}  y ^{-2} )⋅(−9x ^{-4})$$

mertsj · Answer

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

mertsj · Answer

is this the problem you wanted help with?

mertsj · Answer

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

anonymous · Answer

yes sorry

anonymous · Answer

there is a y after that

mertsj · Answer

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

anonymous · Answer

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

mertsj · Answer

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