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Agata [3.3K]
3 years ago
14

Simplify the given expression. –10xy(4xy3 – 7xy + 9y2)

Mathematics
1 answer:
Drupady [299]3 years ago
6 0

Answer:

\large\boxed{-40x^2y^4+70x^2y^2-90xy^3}

Step-by-step explanation:

Use the distributive property <em>a(b + c) = ab + ac</em>:

-10xy(4xy^3-7xy+9y^2)\\\\=(-10xy)(4xy^3)+(-10xy)(-7xy)+(-10xy)(9y^2)\\\\\text{use}\ a^na^m=a^{n+m}\\\\=-40x^{1+1}y^{1+3}+70x^{1+1}y^{1+1}-90xy^{1+2}\\\\=-40x^2y^4+70x^2y^2-90xy^3

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Answer:

the sume of two numbers is 2. if one number is subtracted from the other, their difference is 8. find the numbers---->

Step-by-step explanation:

X+Y=2

X-Y=8

If you subtract X+Y with X-Y, you get 2y, and so that equals 2-8, that is -6.

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3 years ago
The secret number has a 7 in the ones place. The tens number is an odd number
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Answer:

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Step-by-step explanation:

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