+415 What is the coefficient of $x$ in $(x^3 + x^2 + x + 1)(x^4 - 8x^3 + 17x^2 - 23x + 14)$?
+1365 I'm going to do this the hard way and expand eveyrhing out.
Expanding the awful polynomial, which I DEFINTELY NOT reccomending, we have
\(x^{7}-7x^{6}+10x^{5}-13x^{4}+8x^{2}-9x+14\).
As you can seem the coefficient is just -9.
If you want to simplify the process, just note this.
In the expansion, the only two terms that matters is 1*-23x amd x*14x. Adding these 2 we get -9.
Thanks! :)
+1365 I'm going to do this the hard way and expand eveyrhing out.
Expanding the awful polynomial, which I DEFINTELY NOT reccomending, we have
\(x^{7}-7x^{6}+10x^{5}-13x^{4}+8x^{2}-9x+14\).
As you can seem the coefficient is just -9.
If you want to simplify the process, just note this.
In the expansion, the only two terms that matters is 1*-23x amd x*14x. Adding these 2 we get -9.
Thanks! :)
