Question

if 3and -3 are the two zeroes of polynomial P(x)=X4+x³-11x²-9x+18,x+x-11x-9x+18, then find the remaining two zeroes​

Answer 1

if x=±3 are zeroes of the polynomial

==>(x-3)(x+3) is a factor of p(x)

Thus do long division and you will get x²+x-2 as quotient

on factorizing you get (x+2)(x-1)

Therefore, other two zeroes are 1 and -2