f(x) = x! × 5²
f(7) =??
nt :Good Luck
f(7) =??
nt :Good Luck
f(x) = x! × 5²
f(7) = 7! × (5 × 5)
= (7 × 6 × 5 × 4 × 3 × 2 × 1) × 25
= 5.040 × 25
= 126.000
f(x) = x! × 5²
f(7) = 7! × 5 × 5
f(7) = 7 × 6 × 5 × 4 × 3 × 2 × 1 × 25
f(7) = 5040 × 25
f(7) = 126.000