Question

hi how to solve this
-½ and 1 are the value of the polynomial​

Answer 1

Answer:

Enter the polynomial and the value of x for which you want to find the value of the polynomial. The value of polynomial P(x) at x=a is P(a) .

Answer 2

Step-by-step explanation:

2x²-x-1

Using factorisation

2x²-(2-1)x-1

2x²-2x+x-1

2x(x-1)+1(x-1)

(x-1)(2x+1)

=> x = 1 and x = -1/2

Since these are the roots, value of polynomial will be 0 at x = 1 and x = -1/2