1.-20X1/15 2.-5/6X(-12/35) 3.(-5/7)X9X(-7/5) 4.4除以(-2/3) 5.(-32)除以(-56)6.(-3)2 7.(-2)3 8.0.4 3 9.(-7/8)2 10.(-1)6 11.-6 2
问题描述:
1.-20X1/15 2.-5/6X(-12/35) 3.(-5/7)X9X(-7/5) 4.4除以(-2/3) 5.(-32)除以(-56)
6.(-3)2 7.(-2)3 8.0.4 3 9.(-7/8)2 10.(-1)6 11.-6 2
答
1、 -20X1/15 =-4/3
2. -5/6X(-12/35) =5/6×12/35=2/7
3. (-5/7)X9X(-7/5) =5/7x7/5x9=1x9=9
4. 4除以(-2/3) =-4×3/2=-6
5. (-32)除以(-56)=32/56=4/7
6. (-3)²=9
7. (-2)³=-8
8.0.4³=0.064
9.(-7/8)²=49/64
10.(-1)6 =1
11.-6²=-36