subtract a^2-b^2-c^2from 2a^2+2b^2+3c^3
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Answer:
2a²+2b² + 3c³ - ( a² -b² - c² )
2a² + 2b² + 3c³ - a² + b² + c²
2a² -a² + 2b² + b² + 3c² + c²
Hence answer,
a² + 3b² + 4c²
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