回答:
#T = 8/3#
说明:
#sqrt(3T-7)= 2-SQRT(3T + 1)#
#hArrsqrt(3T-7)+ SQRT(3T + 1)= 2#
现在我们得到了解决方案
#3T-7 + 3T + 1 + 2sqrt((3T-7)(3T + 1))= 4#
要么 #6吨+ 2sqrt((3T-7)(3T + 1))= 10#
要么 #sqrt((3T-7)(3T + 1))= 5-3t#
我们再次平息
#(3T-7)(3T + 1))=(5-3t)^ 2#
要么 #9吨^ 2-18t-7 = 25-30t +9吨^ 2#
要么 #-18t +30吨= 25 + 7#
要么 #12吨= 32#
即 #T =十二分之三十二= 8/3#