Question

The sum of the zeros of the polynomial 2x^2-x-1 is

please fast​

Answer 1

2x

2

−8x+6=0

⟹2x

2

−2x−6x+6=0

⟹2x(x−1)−6(x−1)=0

⟹x=1 or 3

So 1,3 are the zeroes of polynomial 2x

2

−8x+6

Sum of zeroes is 1+3=4

Product of zeroes is 1(3)=3