(Q18)Find the roots of the quadratic equations by applying the quadratic formula,

(iii)5x2 - 7x - 6 = 0

Answer:

Given: 5x2 - 7x - 6 = 0

Here a = 5; b = -7 and c = -6

x =
-b ± √(b2 - 4ac)
2a

=
-(-7)±√((-7)2 - 4(5)(-6))
2 × 5

=
7 ± √(+ )
10

=
7 √
10

=
7±
10

=
7+
10
 or
7-
10

=
10
 or
-
10

= or
-
5