Simplify(3x – 2y +z)² + (3x + 2y – z)? – InterviewSolution

1.

Simplify(3x – 2y +z)² + (3x + 2y – z)?

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Answer:

9x²+4y²+z²-12xy-4yz+6xz+9x²+4y²+z²+12xy-4yz-6zx

18x²+8y²+2z²-8yz

this is UR REQUIRED ANS...

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