Question

Verity whether y=1,-1 are zeroes of polynomial (y + 1 )( y - 2).​

Answer 1

Answer:

let try y=1

p (y)=(y+1)(y-2)

p (1)=(1+1)(1-2)

=(2)(-1)

=-2 ( no it is not zero )

let try y=-1

p (-1)=(-1+1)(-1-2)

= (0)(-3)

=0

now we xan conclude that y =-1 is zeroes of p(y).