Question

calcule a funcao 2x²+3x+9

F(4)-F(1)

Answer 1

2x² + 3x + 9

f(4) = 2.4² + 3.4 + 9
f(4) = 2.16 + 12 + 9
f(4) = 32 + 21
f(4) = 53

f(1) = 2x² + 3x + 9
f(1) = 2.1² + 3.1 + 9
f(1) = 2.1 + 3 + 9
f(1) = 2 + 3 + 9
f(1) = 5 + 9
f(1) = 14

f(4) - f(1)
= 53 - 14
= 39

R.: f(4) - f(1) = 39