Question

owing
SE 2009)
eadratic
33. Solve each of the following equations by using
- quadratic formula
(a) x2 - 2x - 4 = 0
(b) 32 - 32x + 12 = 0
(4x2 - 4x + (42 - ) = 0
$*+2 d=0
34. In each of the following determine values of
for which the given quadratic equation has rea
roots:
(a) pax - 2) + 6 = 0
ICBSE SP 2012
(b) + 6 + 2 + 1 = 0
35. Find the values of t for which the roots are real
and equal in each of the following equations:
(a) - +1=0
ICBSE ST 2016
eal roots?​

Answer 1

Answer:

(a) x2-2x-4

d=b2-4ac

d=(-2)2-4(1)(-4)

d=4+16

d=20

x=2+√20/2

and

x=2+√20/2