2x-4x(-2x+4y+5y)+24z×5y+7z(12×34x)
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Step-by-step explanation:
-2x(-2x+4y+5y)+100zy+7z(12×34x)
=4x-8xy-10xy+100zy+84z×238xz
=4x-18xy+100zy+19,992xz
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