Correct the mistakes in fifth grade mathematics
: ∵ Let the left and right focal points of hyperbola x2 16-y24 = 1 and F2 respectively, then ||||||| pf2 | =10 |||| | pf2 | = 8, hyperbola x216-Y24 = 60. Then || pf1|-/kloc-0 | = 8, ∴|PF 1|=2 or | pf 1 | = 18. So the answer is: 2 or 18.