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kenbwind25
2 năm trước
Cho biểu thức A=[( a/a ²-2a)-(a ²+4/a ³-4a)-(1/a ²+2a)]:(a/a^3+8)-3 a, rút gọn A b,tìm a ∈ Z để A=4 c,tìm GTNN của A HELP ME GẤP
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