anonymous
  • anonymous
what is the product of -3x^2y and (5xy^2+xy)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
-15x^(2y+1)*y^3-3x^(2y+1)*y^2
anonymous
  • anonymous
the above answer is correct
anonymous
  • anonymous
which one

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anonymous
  • anonymous
Lemme take a crack at this. Are you there?
anonymous
  • anonymous
yes
anonymous
  • anonymous
Okay, so the original problem is: -3x^2y * 5xy^2+xy This can be broken down into 2 parts: -3x^2y * 5xy^2 and -3x^2y * xy Do you see what I did?
anonymous
  • anonymous
yes
anonymous
  • anonymous
Okay. So let's take each part in turn. Can you multiply these together? -3x^2y * 5xy^2
anonymous
  • anonymous
-15x^2x^2y^2
anonymous
  • anonymous
are anyone here
anonymous
  • anonymous
Ummm...not exactly... :-) On a problem like this, you have to multiply each part like itself. IOW, you multiply the coefficients first (that's the number part) Then you multiply the X-thingies Then you multiply the Y-thingies. So for this one, you would have: -3 * 5 Then you'd have x^2 * x (or x * x^2) And then you'd have y * y^2 (or y^2 * y) can you solve each of them?
anonymous
  • anonymous
-15x x^3 y^4
anonymous
  • anonymous
is it correct
anonymous
  • anonymous
-5 * 3 isn't -15x There's no "x" in "-3" or "5" x^3 is correct!!! :-) y^4 is wrong.
anonymous
  • anonymous
I just guess , it was first one
anonymous
  • anonymous
You don't learn anything by guessing. But if you're tired, I can go away.
anonymous
  • anonymous
It is simple. Pretty much, anyway... :-) But you have to learn it first. Everything is hard before you understand it.
anonymous
  • anonymous
Yes, I knew it was the first one before I even started here. :-) I was trying to teach you how to figure it out like I did.
anonymous
  • anonymous
I'm not going to bang you on the head about it. Just post another problem if you want to learn how to solve it, and if I can help, then I will. I'll go away now. :-)
anonymous
  • anonymous
thank you

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