admin百科知識 2022-02-13 7:52:28 若x+y=4,則多項式12(x+y)+4(x-y)-3(x-y)-32(x+y)-x+y值是()若x y=4,則多項式1/2(x y) 4(x-y)-3(x-y)-3/2(x y)-x y值是()網友廻答:匿名網友1/2(x y) 4(x-y)-3(x-y)-3/2(x y)-x y=X/2 Y/2 4X-4Y-3X 3Y-3/2X 3/2Y-X Y=(1/2 4-3-3/2-1)X (1/2-4 3 3/2 1)Y=-X 2Y網友廻答:匿名網友原式=-x-y=-(x y)=-4網友廻答:匿名網友1/2(x y) 4(x-y)-3(x-y)-3/2(x y)-x y=1/2(x y) (x-y)-3/2(x y)-(x-y)=-(x y)=-4 db標簽 生活常識_百科知識_各類知識大全»若x+y=4,則多項式12(x+y)+4(x-y)-3(x-y)-32(x+y)-x+y值是()
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