如题所述
98²-101x99
=98²-ï¼100+1ï¼xï¼100-1ï¼
=98²-ï¼100²-1ï¼
=98²-100²+1
=ï¼98+100ï¼xï¼98-100ï¼+1
=198xï¼-2ï¼+1
=-396+1
=-395
å¸æ帮å°ä½ æé纳 谢谢 å æ²¹
=98²-ï¼100+1ï¼xï¼100-1ï¼
=98²-ï¼100²-1ï¼
=98²-100²+1
=ï¼98+100ï¼xï¼98-100ï¼+1
=198xï¼-2ï¼+1
=-396+1
=-395
å¸æ帮å°ä½ æé纳 谢谢 å æ²¹
温馨提示:答案为网友推荐,仅供参考