9 x ^ { 2 } + 16 y ^ { 2 } + 4 z ^ { 2 } - 24 x y + 16 y z - 12 x z – InterviewSolution

1.	9 x ^ { 2 } + 16 y ^ { 2 } + 4 z ^ { 2 } - 24 x y + 16 y z - 12 x z
Answer» (-3x)^2+(4y)^2+(2z)^2+2(-3x)(4y)+2(4y)(2z)+2(-3x)(2z) = (-3x+4y+2z)^2

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