如 x十y=x2+y2,则 3十1十3=?
2023-06-09
A.109
B.100
C.120
D.160
参考答案:A
B.100
C.120
D.160
参考答案:A
先计算3十1=32+12=10,则原式变为10十3=102+32=109。
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2023-06-09
先计算3十1=32+12=10,则原式变为10十3=102+32=109。
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