(x-y)的平方等于(y-x)的平方吗
y\u5e73\u65b9\u7b49\u4e8ex\u7684\u56fe\u50cf\u600e\u4e48\u753b\u53d6\u51e0\u4e2a\u7279\u6b8a\u70b9\uff080\uff0c0\uff09\uff0c\uff081\uff0c1\uff09\uff0c\uff081\uff0c-1\uff09\uff0c\uff084,2\uff09\uff0c\uff084\uff0c-2\uff09
\u5c06\u70b9\u8fde\u6210\u5e73\u6ed1\u66f2\u7ebf \uff0c\u5c31\u662f\u4e00\u5f00\u53e3\u5411\u53f3\uff0c\u9876\u70b9\u5728\u539f\u70b9\u7684\u629b\u7269\u7ebf\u561b
x\u7684\u5e73\u65b9\u51cfy\u7684\u5e73\u65b9\u7b49\u4e8e10
x^2-y^2=10
(x-y)(x+y)=10
2*(x+y)=10
x+y=5
相等的
等于的
(x-y)平方=[-(y-x)]平方=(y-x)平方
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