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Problem
Problem
The value of
b
(
>
0
)
b(>0)
b
(
>
0
)
for which the equation
2
log
1
/
25
(
b
x
+
28
)
=
−
log
5
(
12
−
4
x
−
x
2
)
has coincident roots, is
2 \log_{1/25}(bx + 28) = -\log_5(12 - 4x - x^2) \text{ has coincident roots, is}
2
lo
g
1/25
(
b
x
+
28
)
=
−
lo
g
5
(
12
−
4
x
−
x
2
)
has coincident roots, is
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