# -2p^3 (2-p) (3p)

• Oct 9th 2006, 06:49 PM
shenton
-2p^3 (2-p) (3p)
Simplify:

-2p^3 (2-p) (3p)

How do you foil such an expression? :confused: Thanks.
• Oct 9th 2006, 07:02 PM
ThePerfectHacker
Quote:

Originally Posted by shenton
Simplify:

-2p^3 (2-p) (3p)

How do you foil such an expression? :confused: Thanks.

You have,
-2p^3(2-p)
Which is, open parantheses,
-2p^3+2p^4
But now you need to multiply by 3p,
(-2p^3+2p^4)(3p)
Open parantheses,
-6p^4+6p^5

(The way you open parantheses is multipling each term by the single term).
• Oct 9th 2006, 07:13 PM
shenton
When you open -2p^3(2-p), wouldn't that be -4p^3+2p^4?

Let me try again:

-2p^3 (2-p) (3p)

-4p^3 + 2p^4 (3p)

-12p^4 + 6p^5

Correct me if I am wrong. Thanks for showing me how.
• Oct 9th 2006, 07:15 PM
ThePerfectHacker
Quote:

Originally Posted by shenton
When you open -2p^3(2-p), wouldn't that be -4p^3+2p^4?

Yes, you seem to more this more than me.
• Oct 9th 2006, 07:50 PM
shenton
Thanks for confirming my work.

Quote:

Originally Posted by ThePerfectHacker
Yes, you seem to more this more than me.

No, without you, I would have no clue on how to solve this problem. :)