Question

( p(y)=y^{3}-2 y^{2}+y+4 )
( p(-1)=(-1)^{3}-2(-1)^{2}+(-1)+4 )
( -1-2-1+4=0 )
( (x+1) ) is a factor of ( P(y) )
( x=-1 mid begin{array}{cccc}1 & -2 & 1 & 4 0 & -1 & +3 & -4 1 & -3 & 4 & 10 y^{2}-3 y+4 & =0 & y^{2}+y-1 & text { formula for finding } y & =frac{1+3 pm sqrt{9-16}}{2} y & =frac{3 pm sqrt{-71}}{2} y & =frac{3 pm 1 sqrt{7}}{2}end{array} )

# 2v++y+4. Find all the integral zeros of the polynomials Ply) = y

Solution