1.F(X)=X^2+2X+3 A.F(5) B.F(-3) C.F(1/4)

a. f(5)=5^2 +2(5)+3
=25+10+3
=38

b. f(-3)=(-3)^2 +2(-3)+3
=9-6+3
=6

c. f(1/4)=(1/4)^2 +2(1/4)+3
=1/16 + (1/2) +3
=1/16 + 8/16 +3
=9/16 +3
=3 9/16

3 9/16
semoga membantu ya.