Which expressions are equivalent to 25x^4-64? select three options

In the past, professional baseball was played at the astrodome in houston, texas. the astrodome has a maximum height of 63.4 m. the height of a baseball t seconds after it is hit straight up in the air with a velocity of 45 ft/s is given by h = -9.8t2 + 45t + 1. will a baseball hit straight up with this velocity hit the roof of the astrodome? use the discriminant to explain your answer.

What is the prime factorization of 230

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?