+613 What is the coefficient of x in (x3+x2+x+1)(x4−8x3+17x2−23x+14)?
+1952 I'm going to do this the hard way and expand eveyrhing out.
Expanding the awful polynomial, which I DEFINTELY NOT reccomending, we have
x7−7x6+10x5−13x4+8x2−9x+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! :)
+1952 I'm going to do this the hard way and expand eveyrhing out.
Expanding the awful polynomial, which I DEFINTELY NOT reccomending, we have
x7−7x6+10x5−13x4+8x2−9x+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! :)
