X²-2y²+z² from 2x²+3y²-4z² subtract – InterviewSolution

1.

X²-2y²+z² from 2x²+3y²-4z² subtract

Answer»

2x²+3y²-4z²-(x²-2y²+z²)

= 2x²+3y²-4z²-x²+2y²-z²

= 2x²-x²+3y²+2y²-4z²-z²

= x²+5y²-5z²

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