if a= 2 b= -11 c= 15 the value of discriminat is
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Answered by
2
Answer:
Solution:
x
=
−
3
Explanation:
−
x
2
−
9
=
6
x
or
−
x
2
−
6
x
−
9
=
0
Comparing with standard quadratic equation
a
x
2
+
b
x
+
c
=
0
a
=
−
1
,
b
=
−
6
,
c
=
−
9
Discriminant
D
=
b
2
−
4
a
c
or
D
=
36
−
36
=
0
If discriminant positive, we get two real solutions,
if it is zero we get just one solution, and if it is negative we get
complex solutions. Discriminant is zero , so it has one root .
Quadratic formula:
x
=
−
b
±
√
D
2
a
or
x
=
6
±
√
0
−
2
=
−
3
Solution:
x
=
−
3
[Ans]
Answered by
1
Answer:
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