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  1. If x = y = z, then
    (x + y + z)2
    		 is equal to
    x2 + y2 + z2

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

x = y = z

∴ Expression =
(x + y + z)2
x2 + y2 + z2

Expression =
(x + x + x)2
x2 + x2 + x2

Expression =
9x2
= 3
3x2


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