Answer:
a) f(-5) =10
b) f(-2) = 26
Step-by-step explanation:
Given that the function
f (x) = x³ − x² − 25x + 35
Put x =-5
f(-5) = (-5)³ - (-5)²-25(-5)+35
= -125-25+125+35
= 10
f(-5) =10
ii)
f(n) = -4n⁴ - 13n³-5n²+16n+18
f(-2) = -4(-2)⁴ -13(-2)³-5(-2)²+16(-2)+18
= -4(16)-13(-8)-5(4)-12+18
= -64 +104-20-12+18
= 122-96
= 26
f(-2) = 26
