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  1. If a2 = b + c , b2 = a + c , c2 = b + a, then what will be the value of
    1
    +
    1
    +
    1
    = ?
    a + 1b + 1c + 1

    1. –1
    2. 2
    3. 1
    4. 0
Correct Option: C

a2 = b + c
⇒ a2 + a = a + b + c
⇒ a (a + 1) = a + b + c

1
=
a
a + 1a + b + c

Similarly , b2 = a + c
1
=
b
b + 1a + b + c

and c2 = b + a
1
=
c
c + 1a + b + c

1
+
1
+
1
=
a
+
b
+
c
=
a + b + c
= 1
a + 1b + 1c + 1a + b + ca + b + ca + b + ca + b + c



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