Answer:
F(-2) = -115
Step-by-step explanation:
F(x)=3x^5-4x^4+45
let x = -2
F(-2)=3(-2)^5-4(-2)^4+45
= 3*(-32) -4(16) +45
= -96-64+45
=-115
3*(-2)^5-4*(-2)^4+45 = -115
