(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

It says:Determine the coefficient of p.^{4}q^{7 }in the expansion of (2p-q)(p+q)^{10}

I can find the coefficient of p^{4}q^{6}in the expansion of (p+q)^{10}but how am I to find it for (2p-q)(p+q)^{10}???

2. Relevant equations

Binomial expansion formula.

3. The attempt at a solution

[Coefficient of p^{4}q^{6}in the expansion of (p+q)^{10}= (^{10}C_{6}) x (p)^{4}x (q)^{6}.]

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Binomial expansion question that I cannot fathom

**Physics Forums | Science Articles, Homework Help, Discussion**