关于数学化简题,怎么从[1/(x+1)]*{(x-1)/(x+3)}+1]化简到[1/(x+1)]*[2(X+1)/(X+3)],
问题描述:
关于数学化简题,怎么从[1/(x+1)]*{(x-1)/(x+3)}+1]化简到[1/(x+1)]*[2(X+1)/(X+3)],
答
关于数学化简题,怎么从[1/(x+1)]*{(x-1)/(x+3)}+1]化简到[1/(x+1)]*[2(X+1)/(X+3)],