1.

Write the discriminant of quadratic equation:(x – 1)(2x – 1) = 0

Answer»

Given equation,

(x -1) (2x -1) = 0

On expanding it, we get

2x2 – 3x + 1 = 0

It is in the form of ax2 + bx + c = 0

Where, a = 2, b = -3, c = 1

So, the discriminant is given by D = b2 – 4ac

D = (-3)2 – 4 x 2 x 1

D = 9 – 8 

= 1

Hence, the discriminant of the given quadratic equation is 1.



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