Question

if the alpha and Beta are the zeros of 2x²+5x-20 then the value of alpha beta​

Answer 1

Answer:

For a quadratic equation, ax

2

+bx+c=0,

The sum of the roots=

a

−b

and product of the roots is

a

c

Here sum of roots= α+β=

2

−5

Product of roots=αβ=

2

1

Therefore,α+β+αβ=

2

−5

+

2

1

⇒ α+β+αβ=−2