4/x+4 = 3/x + 1/x+12
问题描述:
4/x+4 = 3/x + 1/x+12
答
4/x+4 = 3/x + 1/x+12两边乘以 x (x+4) (x+12) 得4x²+48x = 3( x²+16x+48 ) + x²+4x4x²+48x = 3x²+48x+ 144 + x²+4x 0= 144 +4xx= -36 施主,我看你骨骼清奇,器宇轩昂,且有慧根,...