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SSC CGL Tier 1 :: Quantitative Aptitude QA Test 78

Quantitative Aptitude » QA Test 78 » General Questions - Discussion

1 .


If $x^2$ + $y^2$ + $z^2$ + 4x + 4y + 8 = 0, Find the value of x + y - z = ?

[ A ]    1
[ B ]    0
[ C ]    3
[ D ]    - 4 right
Answer : Option D
Explanation :
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