Home » Aptitude » Algebra » Question
  1. If   x
    x − bc
    +
    x − ca
    +
    x − ab
    = a + b + c what is the value of x ?
    b + cc + aa + b
    1. ab
    2. ab + bc
    3. bc + ca
    4. ab + bc + ca
Correct Option: D

x − bc
+
x − ca
+
x − ab
= a + b + c
b + cc + aa + b

⇒ 
x − bc
− a +
x − ca
− b +
x − ab
− c = 0
b + cc + aa + b

⇒ 
x − bc − ab − ac
+
x − ca − bc − ab
+
x − ab − ac − bc
= 0
b + cc + aa + b

⇒  x – bc – ab – ac = 0
⇒  x = ab + bc + ac



Your comments will be displayed only after manual approval.