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gọ
x={-9;-8;-7;-6;-5;-4;-3;-2;-1;0;1;2;3;4;5;6;7}
x=-17
(–4)
2.(–3)–[(–93)+(–11+8).3]
= 16 . (-3)-[(-93)+(-11+8).3]
= 16 . (-3)-[(-93)+ (-3) .3]
= 16 . (-3)-[(-93) + (-9)]
=16 . (-3)- (-102)
= (-48)-(-102)
= 54
các số thay vào chữ số a là:0,1,2,4,6,7,8
A=(2011+2019)+(2012+2018)+(2013+2017)+(2014+2016)+2015
A= 4030 + 4030 + 4030 + 4030 +2015
A= 8060 + 8060 +2015
A= 17120 +2015
A=19135
Cạnh của hình vuông ABCD:
32:4=8(cm)
Diện tích hình vuông ABCD là:
8x8=64(cm2)
Đáp số:64cm2
-20213<20123