你好！数学之美团为你解答(x-3)/(x-2) ÷ [ x+2 - 5/(x-2) ]= (x-3)/(x-2) ÷ [ (x² -4)/(x-2) - 5/(x-2) ]= (x-3)/(x-2) ÷ (x² - 9)/(x-2)= (x-3)/(x-2) × (x-2) / [(x+3)(x-3)]= 1/(x+3)= 1/( - 4+3)= - 1
此式子答案为1
