计算:1/2a+3+3/3-2a-2a+15/4a^2-9应该是1/(2a+3)+3/(3-2a)-(2a+15)/(4a^2-9)
问题描述:
计算:1/2a+3+3/3-2a-2a+15/4a^2-9
应该是1/(2a+3)+3/(3-2a)-(2a+15)/(4a^2-9)
答
计算:1/2a+3+3/3-2a-2a+15/4a^2-9
应该是1/(2a+3)+3/(3-2a)-(2a+15)/(4a^2-9)