Answers

2015-02-19T17:58:13+05:30
(x-2)² + (y-3)² + (z+5)² = 0

so from property we know that when a² + b² + c² = 0

then a=b=c=0

so here 

also x-2 = 0 ⇒ x = 2

y - 3 = 0 ⇒ y = 3

z+ 5 = 0 ⇒ z = -5

so x + y + z = 2 + 3 - 5 = 0 PROVED

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(2x-y)^2 + (3y-2z)^2 = 0, Find x:y:z.