Question

if a, b, c are in H. P and ab+bc+ca=15then ca=​

Answer 1

Step-by-step explanation:

Lets divide the whole equation by abc we get

a

1

+

b

1

+

c

1

=

abc

15

Now we know

a

1

+

c

1

=

b

2

[HP]

b

3

=

abc

15

ac=5

Answer 2

Answer:

Step-by-step explanation:

Hope this answers the question