化简(x-1-8除以x+1)除以x-3除以x+1

问题描述:

化简(x-1-8除以x+1)除以x-3除以x+1

(x-1-8除以x+1)除以x-3除以x+1 ={(X-1)(X+1)-8}/x+1除以x-3除以x+1 =(X^2-1-8)/x-3 =(X+3)(X-3)/X-3 =X+3