HELP![2+(根号2)/2-(根号2)]^2+[2-(根号2)/2+(根号2)][2+(根号2)/2-(根号2)]^2+[2-_数学解答

HELP!
[2+(根号2)/2-(根号2)]^2+[2-(根号2)/2+(根号2)]
[2+(根号2)/2-(根号2)]^2+[2-(根号2)/2+(根号2)]^2
题错了不好意思~^^;

人气：401 ℃　时间：2020-10-02 01:09:25

解答

最后一个有没有^2呵呵设2=A,(根号2)/2-(根号2)=B则[2+(根号2)/2-(根号2)]^2=A+B-(根号2)/2+(根号2)= -B则,2-(根号2)/2+(根号2)=A-B原式=(A+B)^2-(A-B)^2=2(A^2+B^2)=2{2^2+[(√2/2)-√2]^2}=2{4+[(1/2)-2*√2/2*√2+...