Question

verify whether the volume of X given in each case are the zeros of the polynomial or not? P(X)=(x-1)(x+2);X=-1,-2​

Answer 1

P (x)=(x-1)(x+2)

p (x)= x^2+2x - x -2

p (x)=x^2+x-2

ACCORDING TO QUESTION ...

X= -1, -2.

P(x)= x^2+x-2

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

p (-1)=1 -1-2

p (-1)=-2

not possible ..

p (-2) =(-2)^2+(-2)-2

p(-2)=4-2-2

p (-2)=4-4

p (-2)=0

possible ....