①当a+3与2a-15是同一个平方根时,a+3=2a-15,
解得a=18,
此时,m=441;
②当a+3与2a-15是两个平方根时,a+3+2a-15=0,
解得a=4,
此时m=49.
故答案为:49或441.
已知:a+3与2a-15是m的平方根,则m= _ .
已知:a+3与2a-15是m的平方根,则m= ___ .
数学人气:473 ℃时间:2019-10-25 13:16:25
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