Let f(x)=x3+3x2+4x−7 and g(x)=−7x4+5x3+x2−7 . What is the coefficient of x3 in the sum f(x) + g(x)?
f(x) has x^3
g(x) has 5x^3
x^3 + 5x^3 = 8x^3
=^._.^=
Thanks! :D
You're welcome. :))
I'm really sorry, but the answer is 6.
x^3 + 5x^3 = 6x^3
I have no idea why I thought 1 + 5 = 8.
+273 
