MathDB
Problems
Contests
National and Regional Contests
India Contests
ISI Entrance Examination
2020 ISI Entrance Examination
2
2
Part of
2020 ISI Entrance Examination
Problems
(1)
ISI 2020 : Problem 2
Source: B.Stat& B.Math Entrance Exam
9/20/2020
Let
a
a
a
be a fixed real number. Consider the equation
(
x
+
2
)
2
(
x
+
7
)
2
+
a
=
0
,
x
ā
R
(x+2)^{2}(x+7)^{2}+a=0, x \in R
(
x
+
2
)
2
(
x
+
7
)
2
+
a
=
0
,
x
ā
R
where
R
R
R
is the set of real numbers. For what values of
a
a
a
, will the equ have exactly one double-root?
isi
2020