Question

20) The roots of the quadratic equation 2x2 + x – 1 are ______​

Answer 1

Answer:

½, 1

Step-by-step explanation:

2x²+x-1

2x²+2x-x-1

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

(2x-1)(x+1)

Rootw are ½ and - 1

Answer 2

Answer:

Here is your answer Mate:

Step-by-step explanation:

See in the pic Above..

Hope this may helpful to you.

Thank you...