Question:যদি` a = x^2 + z^2, b = y^2 + z^2`এবং`c = x^2 + y^2` হয়, 
তবে a + b + c = কত ? 

A `2x^2` 
B `2y^2` 
C `2z^2` 
D `4z^2` 

+ Answer
C 

+ Report

Irin Moni

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