Question

is
[ ]
(ac + ab- bc)(ab+bc - ac)
4. If a, b and c are in H.P, then the value of
(abc)
(a + c)(3a –c)
2 1
2 1
a)
b)
bc b²
be a²
(a-c)(3a+c)
4a²c²
c)
d)
4a²c²​

Answer 1

Answer:

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