它化简是?
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它化简是?它化简是? 它化简是?=((X-2)(X-3)/(X+1)(X+4))×((2X+1)(X+1)/(X-1)(X-3))÷ ((2X+1)(X-2)/(X-4)(X+4))=(X-
它化简是?
它化简是?
它化简是?
=( (X-2)(X-3) / (X+1)(X+4) ) × ( (2X+1)(X+1) / (X-1)(X-3) ) ÷ ( (2X+1)(X-2) / (X-4)(X+4) )=(X-2)(X-3)(2X+1)(X+1)(X-4)(X+4) ÷ <(X+1)(X+4)(X-1)(X-3)(2X+1)(X-2)>
=(X-4)/(X-1)