Question

f(x) = x2 + x + 2 then f (1) + f (2) is​

Answer 1

Answer:

(x+1/x)² = 3 x+1/x = √3

(x+1/x)³ = x³ + (1/x)³ + 3(x)(1/x) (x + 1/x) √33x³+1/x³ + 3(√3) +1/x³=3√3-3√3 x³+1 x³+1/x³ = 0

Answer 2

Answer:

12

Step-by-step explanation:

Given:-f( x)=x^2+x+2

So, f(1)=(1)^2+1+2

=1+1+2=4

f(2)=(2)^2+2+2

=4+2+2=8

Therefore, f(1)+f(2)=4+8=12