Question

-1pe5+11pe5×1pe11;(1pe5)la puterea-1:5-2;6la puterea-1+5pe6;2la puterea-4-5pe16;5,6×10-0,86×100;0,2(3)×3-1pe3

Answer 1

Răspuns:

-1pe5+11pe5×1pe11=

-1/5+11/5×1/11+

-1/5+1/5=

0

(1pe5)la puterea-1:5-2=

(1/5)^(-1):5-2=

1/[(1/5)^1]:5-2=

1×5/1 :5-2=

5:5 - 2=

1-2=

-1

6la puterea-1+5pe6=

6^(-1)+5/6=

1/(6^1)+ 5/6=

1/6+5/6=

6/6=

1

2la puterea-4-5pe16=

2^(-4)-5/16=

1/(2^4)-5/16=

1/16-5/16=

-4/16=

-1/4

5,6×10-0,86×100=

56/10×10-86/100×100=

56-86=

-60

0,2(3)×3-1pe3=

(23-2)/90 ×3-1/3=

21/90×3 - 1/3=

7/30×3- 1/3=

7/10-1/3=

21/30-10/30=

11/30

Explicație pas cu pas: