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[1/1 Formula]
    Work: Calculate the value of equation -43*30+7*30^2 .
    Question type: Mathematical calculation
    Solution:
          -43*30+7*30^2
        =-43*30+7*900
        =-1290+7*900
        =-1290+6300
        =5010
    Answer:-43*30+7*30^2=5010

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