计算题

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98x²y-31x-0.8x²y-0x²y-24,其中x=1,y=78

-31x²y+33x+0x²y+0.7x²y+98,其中x=0.8,y=5

-33x²y+37x+0.7x²y+0.4x²y+31,其中x=0.8,y=75

37x²y-3x-0.4x²y-1x²y-33,其中x=0.7,y=-88

-3x²y-21x-1x²y-0x²y-37,其中x=0.8,y=-12

-21x²y-26y-0x²y-0.1x²y-3,其中x=0.7,y=-92

-26x²y+39x+0.1x²y+0.5x²y+21,其中x=0.2,y=96

39x²y+82x+0.5x²y+0.9x²y+26,其中x=0.4,y=-20

82x²y-65x-0.9x²y-0.3x²y-39,其中x=0.7,y=61

65x²y+24x+0.3x²y+1x²y+82,其中x=0.6,y=24

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