Question

Answer 1

a,(3/5+1/2)²-(3/4-5/6)

=121/100-1/144

=4331/3600

c,\(\dfrac{6^2.6^3}{2^53^5}\)

=\(\dfrac{6^5}{6^5}\)=1

d,\(\dfrac{2^7.9^3}{6^5.8^2}\)

=\(\dfrac{2^7.3^6}{2^5.3^5.2^6}\)

=\(\dfrac{3}{16}\)

Answer 2

câu b cái mũ bạn tô đen là bạn gạch đi hay là cái mũ nào đấy

Answer 3

b,(1+2/3-1/4).(4/5-3/4)²

=(5/3-1/4).(1/20)²

=17/12.1/400

=17/4800

c,2:(4/3-16/15)² -12

=2:(4/15)²-12

=2:16/225-12

=225/8-12

=129/8

g,\(\dfrac{10^3+5.10^2+5^3}{-13}\)

=\(\dfrac{1625}{-13}\)