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NCERT Solutions for Class 10th Mathematics

 

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Chapter 4. Quadratic Equations

Exercise 4.1

 

 

 

Exercise 4.1 


Q1. Find the roots of the quadratic equations  3x2 - 7x + 4 = 0 by using completing square memthod

a = 3, b = -7, c = 4

Now checking for nature of roots,

D = b2 - 4ac

D = (-7)2 - 4 × 3 × 4

D = 49 - 48

D = 1

Hence D > 0

∴ There is two different and real roots


Q2.

a = 3, b = 7, c = 4

Now checking for nature of roots,

D = b2 - 4ac

D = (7)2 - 4 × 3 × 4

D = 49 - 48

D = 1

Hence D > 0

∴ There is two different and real roots

 

 

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