(Q19)Find the roots of the quadratic equations by applying the quadratic formula,
(iv)x
2
+ 5 = -6x
Answer:
Given: x
2
+ 5 = -6x
x
2
+ 6x + 5 = 0
Here a = 1; b = 6; c = 5
x =
-b ± √(b
2
- 4ac)
2a
=
-6 ± √(
2
-4(
)(
))
2×1
=
-6 ± √(
-
)
2
=
-6 ± √
2
=
-6 ±
2
=
-6 +
2
or
-6 -
2
=
-
2
or
-
2
= -
or -
.
Clear