设A={x,y},B={1,xy},若A=B求x,y?
设A={x,y} B={1,xy}若A=B,求x,y的值
设集合A={x-y,x+y,xy}B={x²+y²,-x²-y²,0}若A=B求
设A=2x-3xy+y+x-3y,B=4x-6xy+2y+4x-y,若|x-3a|+(y+3)=0,且B-2A=a.求A
设A=2x^2-3xy+y^2-x+2y,B=4x^2-6xy+2y^2-3x-y.求B-2A;若|x-2a|+(y+3
已知:A=X*X-3xy+y*y,B=2x*x+xy-3y*3y.求A+B,A-B,A+2B
设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,若x
设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y.若x
设A={x,x2,xy} B={1,x,y}.且A=B.求实数xy的值.
设集合A={x-y,x+y,xy},B={x²+y²,x²-y²,0},若A=B
设A=2X²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,若|
设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y 若|
设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,若│