Question

F (x)=x2+5x-4 calcule f (2)+3 [f (3)]-f (1) AJUDEM PF

Answer 1

f(x)=x²+5x-4
f(2)=2²+5.2-4
f(2)=4+10-4
f(2)=10

f(3)=3²+5.3-4
f(3)=9+15-4
f(3)=20

f(1)=1²+5.1-4
f(1)=1+5-4
f(1)= 2

f(2)+3f(3)-f(1)=?
10+3.20-2=
10+60-2=
   68

Tenha uma boa tarde!
ECS.15/12/2016