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