Question

Find the exact zeros:
h(x)= x^4+2x^3+x^2+8x-12

Answer 1

of a polynomial of degree 4?!

Answer 2

check obvious numbers like 1 and -1 first

Answer 3

i think 1 works, check that. then factor

Answer 4

after you factor, i guess you are supposed to try some other divisors of 12, but it is a pain. i would just cheat
http://www.wolframalpha.com/input/?i=x%5E4%2B2x%5E3%2Bx%5E2%2B8x-12

Answer 5

THANK YOU!!!