[(a+b)(a-b)-(a+b)的二次方+2b(a-b)]除以(-2b)等于

Question

[(a+b)(a-b)-(a+b)的二次方+2b(a- b)]除以(-2b)等于

Answer 1

[(a+b)(a-b)-(a+b)��+2b(a- b)]÷(-2b)
=[a��-b��-(a��+2ab+b��)+2ab-2b��]÷(-2b)
=(a��-b��-a��-2ab-b��+2ab-2b��)÷(-2b)
=-4b��÷(-2b)
=2b
同学,提醒一下,在获得答案后,别忘了及时采纳哦,采纳可获得2经验值奖励!请抽空采纳,顺祝春节快乐,万事顺利!提前祝元宵节快乐!