RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 10. Quadratic Equations

Subject: Maths - Class 10th

Q. No. 1 of Exercise 10C

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1

Find the discriminant of each of the following equations:

2x2 – 7x + 6 = 0

Given: 2x2 – 7x + 6 = 0

Comparing with standard quadratic equation ax2 + bx + c = 0


a = 2, b = – 7, c = 6


Discriminant D = b2 – 4ac


= (– 7)2 – 4.2.6


= 49 – 48 = 1


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