:α=1425/6设E8y25向量PE=8y-8

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:α=1425/6设E8y25向量PE=8y-8:α=1425/6设E8y25向量PE=8y-8:α=1425/6设E8y25向量PE=8y-8∴B正确[[[6]]]x8*x25x6*x14

:α=1425/6设E8y25向量PE=8y-8
:α=1425/6设E8y25向量PE=8y-8

:α=1425/6设E8y25向量PE=8y-8
∴B正确[[[6]]]x8*x25 x6*x14