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Byju's Answer
Standard XII
Mathematics
Complex Numbers
Solve : limy...
Question
Solve :
lim
y
→
7
y
2
−
4
y
−
21
3
y
2
−
17
y
−
28
Open in App
Solution
lim
y
→
7
y
2
−
4
y
−
21
3
y
2
−
17
y
−
28
=
lim
y
→
7
(
y
−
7
)
(
y
+
3
)
(
3
y
+
4
)
(
y
−
7
)
=
lim
y
→
7
y
+
3
3
y
+
4
=
10
25
=
2
5
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0
Similar questions
Q.
The value of
lim
y
→
7
y
2
−
4
y
−
21
3
y
2
−
17
y
−
28
is
Q.
Solve the following simultaneous equations:
15
x
−
17
y
=
28
;
15
y
−
17
x
+
36
=
0
Q.
The transformed equation of
3
x
2
+
4
x
y
−
7
y
2
−
14
=
0
when origin is shifted to the point
(
−
1
,
2
)
, and then axes being rotated at an angle of
90
∘
is
Q.
Solve the following equation :
3
x
2
−
2
y
2
+
5
z
2
=
0
,
7
x
2
−
3
y
2
−
15
z
2
=
0
,
5
x
−
4
y
+
7
z
=
6.
Q.
Solve for
y
:
4
y
−
21
=
y
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