化简.(7-5√2) (-7-5√2)

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/26 18:16:03
化简.(7-5√2)(-7-5√2)化简.(7-5√2)(-7-5√2)化简.(7-5√2)(-7-5√2)=-7-5√2-7-5√2-7-5√2(7-5√2)(-7-5√2)=-(7-5√2)(7+

化简.(7-5√2) (-7-5√2)
化简.(7-5√2) (-7-5√2)

化简.(7-5√2) (-7-5√2)
=-7-5√2

-7-5√2

-7-5√2

(7-5√2) (-7-5√2)=-(7-5√2) (7+5√2)=-[7^2-(5√2)^2)]=-(49-50)=1

(7-5√2) (-7-5√2)
=(5√2-7) (5√2+7)
=50-49
=1