(Q5)Solve the equation by completing the square.
(iii)x
2
+ 7x - 6 = 0
x
2
+ 7x - 6 = 0
x
2
+ 7x = 6
x
2
+2.x.
7
2
+ (
7
2
)
2
= 6+(
7
2
)
2
(x +
7
2
)
2
= 6 +
49
4
=
4
x +
7
2
= ± √
4
x =
-7
2
+
√
2
(or) x =
-7
2
-
√
2
Clear