1471\frac47174 +7137\frac13731+3353\frac35353 =
A21/105
B8/105
C25/105
D1313/105
Answer:
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If x=y=z , then (x+y+z)2x2+y2+z2\frac{(x+y+z)^2}{x^2+y^2+z^2}x2+y2+z2(x+y+z)2 is: