Question

Show that -1 is not a zero of the polynomial p(x) = x²-x-2

pls give me the answer fast !!!​

Answer 1

Answer:

$.$

Step-by-step explanation:

zero or root of a polynomial function is a number that, when plugged in for the variable, makes the function equal to zero.

Now,

P(x) = x² – x – 6

Therefore,

P(-2) = (-2)² – (-2) – 6

⇒ P(-2) = 4 + 2 – 6

⇒ P(-2) = 0

similarly, P(3) = 3² – 3 – 6

⇒ P(3) = 9 – 3 – 6

⇒ P(3) = 0

Hence, Yes, 3 and -2 are zeroes of the polynomial x² – x – 6.

Answer 2

Answer:

let,

x be -1

so,

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

= 1+1-3

=2-3

= -1

hence,-1 is not a zero of the polynomial p(x)