Toán Lớp 7: Tìm x; y biết:
a. . 25 – y2 = 8( x – 2009)
“Cứu tuiiiiiii”
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Toán Lớp 7: Tìm x; y biết:
a. . 25 – y2 = 8( x – 2009)
“Cứu tuiiiiiii”
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