计算题(整式)(X+3).(X+4)=(Y-1).(Y-2)=(Y+2).(Y-2)=(2A-1).(3A-2)=(2A+3).(3A-2)=(3X-5Y).(2X+3Y)=(A+B-C).(A-B-C)=(2X-3Y-Z).(2X-3Y+Z)=

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计算题(整式)(X+3).(X+4)=(Y-1).(Y-2)=(Y+2).(Y-2)=(2A-1).(3A-2)=(2A+3).(3A-2)=(3X-5Y).(2X+3Y)=(A+B-C).(A-B-C)=(2X-3Y-Z).(2X-3Y+Z)=
计算题(整式)
(X+3).(X+4)=
(Y-1).(Y-2)=
(Y+2).(Y-2)=
(2A-1).(3A-2)=
(2A+3).(3A-2)=
(3X-5Y).(2X+3Y)=
(A+B-C).(A-B-C)=
(2X-3Y-Z).(2X-3Y+Z)=

计算题(整式)(X+3).(X+4)=(Y-1).(Y-2)=(Y+2).(Y-2)=(2A-1).(3A-2)=(2A+3).(3A-2)=(3X-5Y).(2X+3Y)=(A+B-C).(A-B-C)=(2X-3Y-Z).(2X-3Y+Z)=
(X+3).(X+4)= X^2+7X+12
(Y-1).(Y-2)= Y^2-3Y+2
(Y+2).(Y-2)= Y^2-4
(2A-1).(3A-2)= 6A^2-7A+2
(2A+3).(3A-2)= 6A^2+5A-6
(3X-5Y).(2X+3Y)= 6X^2-XY-15Y^2
(A+B-C).(A-B-C)= A^2-B^2+C^2-2AC
(2X-3Y-Z).(2X-3Y+Z)=4X^2+9Y^2-Z^2-12XY