Question

How do I factor this?
15x^4 - 62x^3 + 95x^2 - 64x + 16

Answer 1

try grouping..

Answer 2

you could try the factor theorem
f(1) = 15 - 62 + 95 - 64 + 16 = 0
therefore (x-1) is a factor
divide this into the function (or use synthetic division)
tp give a cubic function which should be easier rto factor

Answer 3

http://www.wolframalpha.com/input/?i=factor%2815x%5E4+-+62x%5E3+%2B+95x%5E2+-+64x+%2B+16%29

Answer 4

thanks cwrw