According to the Fundamental Theorem of Algebra, which polynomial function has exactly 8 roots?
A
f of x is equal to open paren 3 x to the 4th power plus 2 x close paren to the 4th powerB
f of x is equal to open paren 6 x to the 8th power minus 4 x to the 5th power minus 1 close paren times open paren 3 x squared minus 4 close parenC
f of x is equal to open paren 3 x squared minus 4 x minus 5 close paren times open paren 2 x to the 6th power minus 5 close parenD
f of x is equal to open paren 4 x squared minus 7 close paren cubed