已知x=√3+1,y=√3-1,求下列各式的值 (1)x눀+2xy+y눀 (2)x눀-y눀

2025-02-01 13:10:23
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回答1:

1:x²+2xy+y²=(x+y)²=(2√3)²=12
2:x²-y² =(x+y)(x-y)=2√3*2=4√3