Câu hỏi:
37 lượt xemLời giải
Hướng dẫn giải:
a)2..(−)=−2..=−2.=−2.6=−12
b)−2.=1,2−2.0,6=1,2−1,2=0
c)0,1.+=0,1.7+1,3=0,7+1,3=2
d)(−0,1).−.=(−0,1).120−.20=−12−5=−(12+5)=−17
a)2..(−)=−2..=−2.=−2.6=−12
b)−2.=1,2−2.0,6=1,2−1,2=0
c)0,1.+=0,1.7+1,3=0,7+1,3=2
d)(−0,1).−.=(−0,1).120−.20=−12−5=−(12+5)=−17