Question

is x= -2, zero of the polynomial x2-2x+8.​

Answer 1

Answer:

x = -2 is not zero of p(x)

Step-by-step explanation:

p(x) = x² - 2x + 8

x = -2

put x in p(x)

p(-2) = (-2)² - 2(-2) + 8

= 4 + 4 + 8

= 16

p(-2) ≠ 0

then x = -2 is not zero of p(x)

Answer 2

Given that

X = -2 ; p(X) = x^2-2x+8

Then p(X) = p (-2)

p(-2) = (-2)^2-2(-2)+8

= (4)+4+8

= 8+8

= 16

Hence X = -2 is not a zero of a polynomial p(X)