{a+2+根号(a²-4) }{/a+2-根号(a²+4)}………………化简,并带入,你喜欢的a的值{a+2+根号(a²-4) }{/a+2-根号(a²+4)} - {a+2-根号(a²-4) }/{a+2+根号(a²+4)}
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 02:34:26
![{a+2+根号(a²-4) }{/a+2-根号(a²+4)}………………化简,并带入,你喜欢的a的值{a+2+根号(a²-4) }{/a+2-根号(a²+4)} - {a+2-根号(a²-4) }/{a+2+根号(a²+4)}](/uploads/image/z/1655109-45-9.jpg?t=%EF%BD%9Ba%2B2%2B%E6%A0%B9%E5%8F%B7%28a%26%23178%3B-4%29+%EF%BD%9D%EF%BD%9B%2Fa%2B2-%E6%A0%B9%E5%8F%B7%28a%26%23178%3B%2B4%29%EF%BD%9D%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A6%E5%8C%96%E7%AE%80%2C%E5%B9%B6%E5%B8%A6%E5%85%A5%2C%E4%BD%A0%E5%96%9C%E6%AC%A2%E7%9A%84a%E7%9A%84%E5%80%BC%EF%BD%9Ba%2B2%2B%E6%A0%B9%E5%8F%B7%28a%26%23178%3B-4%29+%EF%BD%9D%EF%BD%9B%2Fa%2B2-%E6%A0%B9%E5%8F%B7%28a%26%23178%3B%2B4%29%EF%BD%9D+-+%EF%BD%9Ba%2B2-%E6%A0%B9%E5%8F%B7%28a%26%23178%3B-4%29+%EF%BD%9D%2F%EF%BD%9Ba%2B2%2B%E6%A0%B9%E5%8F%B7%28a%26%23178%3B%2B4%29%EF%BD%9D)
{a+2+根号(a²-4) }{/a+2-根号(a²+4)}………………化简,并带入,你喜欢的a的值{a+2+根号(a²-4) }{/a+2-根号(a²+4)} - {a+2-根号(a²-4) }/{a+2+根号(a²+4)}
{a+2+根号(a²-4) }{/a+2-根号(a²+4)}………………化简,
并带入,你喜欢的a的值
{a+2+根号(a²-4) }{/a+2-根号(a²+4)} - {a+2-根号(a²-4) }/{a+2+根号(a²+4)}
{a+2+根号(a²-4) }{/a+2-根号(a²+4)}………………化简,并带入,你喜欢的a的值{a+2+根号(a²-4) }{/a+2-根号(a²+4)} - {a+2-根号(a²-4) }/{a+2+根号(a²+4)}
把去(a+2)当做一个数计算进去,结果为(2a+4)*根号下(a2-4),带入a=2,所以等于0