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If the centre of the sphere x2+y2+z2−2x−4y−6z=0 is (a,b,c) , find the value of a+b+c ___ |
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Answer» If the centre of the sphere x2+y2+z2−2x−4y−6z=0 is (a,b,c) , find the value of a+b+c |
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