帮忙算一下这道题,过程写清楚一点,在帮忙解释一下.

显示全部楼层 · 2006-3-13 20:39:24

A^-AB+B^ = (A+B)-3AB = 25-9/2 (A-B)^= (A+B)^-4AB = 25-6 = 19

千问 · 2006-3-13 20:39:24

A2-AB+B2 = (A+B)2-3AB = 25-9/2 = 41/2 (A-B)2+5 =(A+B)2-4AB+5=25-6+5=24楼上的很无耻

千问 · 2006-3-13 20:39:24

A^-AB+B^ = (A+B)-3AB = 25-9/2 (A-B)^= (A+B)^-4AB = 25-6 = 19 回答者：hayley - 见习魔法师二级 3-13 20:39--------------------------------------------------------------------------------A^-AB+B^ = (A+B)-3AB = 25-9/2 (A-B)^= (A+B)^-4AB = 25-6 = 19 回答者：a463044214a - 魔法学徒一级 3-13 20:42--------------------------------------------------------------------------------A2-AB+B2 = (A+B)2-3AB = 25-9/2 = 41/2 (A-B)2+5 =(A+B)2-4AB+5=25-6+5=24