Question

find the value of the discrimination and write the nature of roots 2 x square - 5 x minus one =0​

Answer 1

YOUR ANSWER IS 33

EXPLANATION:-

Given equation-

$2x {}^{2} - 5x - 1 = 0$

To find-

Discriminant of the given equation.

As we know that Discriminan (D) =

$b {}^{2} - 4ac$

So in the given equation,

$b = - 5 \\ a = 2 \\ c = - 1$

Therefore Discriminant

$= ( - 5) {}^{2} - 4(2)( - 1) \\ = 25 - 4 ( - 2) \\ = 25 + 8 \\ = 33$

Therefore the Discriminant of the given equation is 33.

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Answer 2

Answer:

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