Question

what is the product of -3x^2y and (5xy^2+xy)

Answer 1

-15x^(2y+1)*y^3-3x^(2y+1)*y^2

Answer 2

the above answer is correct

Answer 3

which one

Answer 4

Lemme take a crack at this. Are you there?

Answer 5

yes

Answer 6

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?

Answer 7

yes

Answer 8

Okay. So let's take each part in turn.

Can you multiply these together?
-3x^2y * 5xy^2

Answer 9

-15x^2x^2y^2

Answer 10

are anyone here

Answer 11

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?

Answer 12

-15x
x^3
y^4

Answer 13

is it correct

Answer 14

-5 * 3 isn't -15x
There's no "x" in "-3" or "5"

x^3 is correct!!! :-)

y^4 is wrong.

Answer 15

I just guess , it was first one

Answer 16

You don't learn anything by guessing.

But if you're tired, I can go away.

Answer 17

It is simple. Pretty much, anyway... :-)

But you have to learn it first.
Everything is hard before you understand it.

Answer 18

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.

Answer 19

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. :-)

Answer 20

thank you