Question

Verify whether the following are the zeros of the polynomial indicated against them

2x² + x - 1 , x= -1/2​

Answer 1

Answer:

No, it is not a zero of the polynomial.

Step-by-step explanation:

x = -1/2

Substituiting value of x in the polynomial equation,

[2*(-1/2)*(-1/2)] + (-1/2) - 1

= 1/2 -1/2 -1

Now taking a common denominator, we get

1/2 - 1/2 - 2/2

= -2/2

= -1

For a value to be zero of the polynomial, we subs. the value. If answer comes out to be zero, the value is a zero.

In this case, we got -1 , which means that x=-1/2 is not a zero of the polynomial.

hope it helps!