Question

va rog dau coroana!!!!!!!!!
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Answer 1

1) (-4/9)^2 = 4^2/9^2 (pt ca e putere para, semnul - devine plus fiindca - × - = +) = 16/81

2) (-2/5)^3 = - 2^3/5^3 = -8/125

3) (-3/8)^2 = 9/64

4) (-36/47)^1 = -36/47

5) (-1 2/3)^2 = (-5/3)^2 = 25/9

6) (+0,6)^2 = 3,6

7) (+2 5/6)^2 = (17/6)^2 = 289/36

8) (-2,5)^2 = 62,5

9) (-0,1 (3) )^2 = [(13-1)/90 ]^2 = (12/90)^2 = (2/15)^2 = 4/ 225

10) (- 12/7)^3 = - 1728/343

11) (+1,75)^2 = 3,0625

12) (- 1/2)^2 + 7/4 = 1/4 + 7/4 = 8/4 = 2

13) (-3/5)^2 + (1/2)^2 = 9/25 + 1/4 = 36+25/100 = 61/100 = 0,61

14) (-13/14)^2 = 169/196

15) (8/15)^3 = 512/3375