Question

If alpha+beta=-5upon2 and alpha×beta=2 then find 2×(alpha+beta)2-alpha beta

Answer 1

Answer : I think answer is -2

Answer 2

Answer:

α + β = - 5/2

αβ = 2

Now,

To find -

2 (α + β)² - αβ

⇒ 2 * (-5/2)² - 2

⇒ 2 * 25/4 - 2

⇒ 25/2 - 2

⇒ 25 - 4 /2

⇒ 21/2

Hence, the answer is 21/2.