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