Question

Find the nature of roots for equation 2x² - under root 5x -2 ​

Answer 1

Answer: Real & unequal.

Explanation:

We know, D = b^2 - 4ac.

⇒ D = (- √5)^2 - 4(2)(- 2)

⇒ D = 5 + 16 = 21.

Therefore, since discriminant is positive, and not zero, so the roots are different and real.