Question

dada a Função F(x)= 2x³-4x+2 calcule o f(1) - o F(3)

Answer 1

f(1) = 2. 1³ - 4. 1 + 2
f(1) = 2 - 4 + 2
f(1) = 4-4
f(1) = 0

f(3) = 2.3³ - 4.3 + 2
f(3) = 2. 27 - 12 + 2
f(3)= 54 - 12 + 2
f(3) = 42 + 2
f(3) = 44

f(1) - f(3) = 0 - 44
f(1) - f(3) = - 44

Answer 2

(2*1³-4*1+2 )- (2*3³-4*3+2)
    (2-4+2)-(54-12+2)
    ( -2+2)-(44)
       0-44=-44