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Test Index
JEE Main Math Class 11 Complex Numbers and Quadratic Equations Part 3 Questions
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© examsnet.com
Question : 18
Total: 100
The sum of all the roots of the equation
|
x
2
−
8
x
+
15
|
−
2
x
+
7
=
0
is :
[6-Apr-2023 shift 1]
11
−
√
3
9
−
√
3
9
+
√
3
11
+
√
3
Validate
Solution:
|
x
2
−
8
x
+
15
|
=
2
x
−
7
x
2
−
8
x
+
15
=
2
x
−
7
&
x
2
−
8
x
+
15
=
7
−
2
x
x
2
−
10
x
+
22
=
0
&
x
2
−
6
x
+
8
=
0
Sum of of roots is
=
5
+
√
3
+
4
=
9
+
√
3
© examsnet.com
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