how do you multiply (2x-3)(x^2-5x+7)?

Question

tkhunny · Answer

One piece at a time.  You have multiplied binomials, right?  It is not ANY different.

hero · Answer

Distribute 2x + 3 to each term in the trinomial:

x^2(2x + 3) - 5x(2x + 3) + 7(2x + 3)

Continue distributing:

2x^3 + 3x^2 - 10x^2 - 15x + 14x + 21

Combine like terms:

2x^3 +(3 - 10)x^2 - (15 - 14)x + 21

2x^3 - 7x^2 - x + 21

hero · Answer

@naishasilva

anonymous · Answer

oh ok thank you :) you make it easier than myy math teacher would :D

hero · Answer

How so?

anonymous · Answer

all she does is make us do one problem wit her. and she doesnt give notes :/ so yeah and she gives us a whole page to do and no one knows how to do those completeely

hero · Answer

Well, they're easier than you think. Maybe she wants you to take your own notes. You should bring your tablet to class and take notes on it.

anonymous · Answer

in my school i cant have a tablet unless i have a 504 plan :/ sadly

hero · Answer

That is kind of harsh.

anonymous · Answer

oh i know :(