a²-b² from a²+b²
10x²+11xy+10y² from 12xy-3x²-4y²
please tell immediately
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Answer:
1) a² + b² - (a² - b²)
= a²+b²-a²-b²
= 0
2) 12xy-3x²-4y²-(10x²+11xy+10y²)
= 12xy-11xy-3x²-10x²-4y²-10y²
=xy-13x²-14y²
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