ab不等于零,a+b-4ab=0求( 4a+3ab+4b)÷(-3a+2ab-3b)
问题描述:
ab不等于零,a+b-4ab=0求( 4a+3ab+4b)÷(-3a+2ab-3b)
答
a+b-4ab=0 a+b=4ab ( 4a+3ab+4b)÷(-3a+2ab-3b) =[4(a+b)+3ab]÷[-3(a+b)+2ab] =( 4ab+3ab)÷(-12ab+2ab) =-7/10