Toán A=2-4+6-8+10-12+14-16+18-20+22-24+26-28+30-32 11/07/2021 By Valerie A=2-4+6-8+10-12+14-16+18-20+22-24+26-28+30-32
$A = 2 – 4 + 6 – 8 + 10 -12 + 14 – 16 + 18 -20 + 22 – 24 + 26-28 + 30 -32$$= ( 2 – 4 ) + ( 6 – 8 ) + ( 10 – 12 ) + ( 14 – 16 ) + ( 18 -20) + ( 22 -24) + ( 26-28) + ( 30 – 32 )$ $= -2.8$ $= -16$ Trả lời
$A = 2 – 4 + 6 – 8 + 10 -12 + 14 – 16 + 18 -20 + 22 – 24 + 26-28 + 30 -32$
$= ( 2 – 4 ) + ( 6 – 8 ) + ( 10 – 12 ) + ( 14 – 16 ) + ( 18 -20) + ( 22 -24) + ( 26-28) + ( 30 – 32 )$
$= -2.8$
$= -16$
ko chép lại câu hỏi
= (-2) +( -2) + (-2) + (-2) + (-2 )+ (-2) + (-2) + (-2)
= -16