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hangphuongqn
2 năm trước
tính giá trị biểu thức a , A = 1500 – { 52 . 23 – 11 . [ 72 – 5 . 23 + 8 . ( 112 – 121 ) ] } b , B = 32 . 103 – [ 132 – ( 52 . 4 + 22 . 15 ) ] . 103 c , C = 1 – 2 – 3 + 4 + 5 – 6 – 7 + ... + 2008 + 2009 – 2010 – 2011 d , D = 1 – 2 + 5 – 7 + ... + 2005 – 2007 + 2009 – 2011 e , E = ( – 10 ) . ( – 7 ) + ( – 15 ) . ( + 5 ) – ( – 3 )^3 đừng ghi tắt nha .
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