Question

find q(a+1)-2q(a) if q(x)=x^2+3x+4

Answer 1

Answer:

$-a^2-a$

Step-by-step explanation:

$q(a+1)-2q(a)\\\\=(a+1)^2+3(a+1)+4-2(a^2+3a+4)\\\\=a^2+2a+1+3a+3+4-2a^2-6a-8\\\\=-a^2-a$