Question

If f(x) = 4x'-10x2+12x+5, find: f(3)​

Answer 1

Answer:

$f(3) = 4 \times 3 - 10 \times 3 + 12 \times 3 + 5 \\ = 12 - 30 + 36 + 5 \\ =12 - 30 + 41 \\ = 23$

Answer 2

Step-by-step explanation:

$x = 3 \\ f(x) = 4 {x}^{3} - 10 {x}^{2} + 12x + 5 \\ f(3) = 4 {(3)}^{3} - 10 {(3)}^{2} + 12(3) + 5 \\ f(3) = 4 (27) - 10(9) + 36 + 5 \\ f(3) = 108 - 90 + 41 \\ f(3) = 18 + 41 \\ f(3) = 59$