Question

if two zeroes of the polybomial x⁴+x³-15x²-2x-6 and 2+-root 5. find other zeroes.​

Answer 1

Step-by-step explanation:

x^4+x^3-15x^2-2x-6=x(x^3+x^2-15x-8)=0

then x taking common the equation is ( x^2+x-23)=0

according to formulla -b+or- √b^2-4ac/2a=-1+or-√1^2-4×1×-23/1=-1+or-√1+52=-1+or-√53=√53-1or-√53-1