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2427a<br />
20 − 15 20 + ( −15)<br />
10 ⋅ 10 = 10 =<br />
20−15 5<br />
10 = 10<br />
2427d<br />
−3<br />
10<br />
= 10 − 7<br />
10<br />
= 10 = 10<br />
2428a<br />
−− =−− =<br />
−−− 3 ( 7) −+ 3 7 4<br />
3<br />
( 2) ( 8) 8<br />
2428d<br />
−<br />
1<br />
=<br />
( −10)<br />
1<br />
= =<br />
1<br />
−10<br />
( 1) 1<br />
10<br />
2429c<br />
1<br />
−1<br />
−1 ⎛2⎞ 1<br />
(0,4) = 1<br />
⎜ ⎟ = = =<br />
1<br />
⎝5⎠ ⎛2⎞ 2<br />
⎜ ⎟<br />
⎝5⎠ 5<br />
1 5 5<br />
⋅ = = 52<br />
1 2 2<br />
2430a<br />
9= 3⋅ 3= 3<br />
2<br />
2431a<br />
−3 2 −1<br />
4 ⋅4 ⋅ 4 =<br />
−+− 3 2 1 −2<br />
4 = 4<br />
2432a<br />
3<br />
(0,1) = 0,001<br />
0.1^ 3<br />
LÖSNINGAR DEL B<br />
2427b<br />
10<br />
10<br />
10 = 10<br />
20<br />
20 −− ( 15)<br />
= 10 =<br />
−15<br />
20+ 15 35<br />
2427e<br />
13 14 1 13 14<br />
10⋅10 ⋅10 10 ⋅10 ⋅10<br />
=<br />
34 −734−7 10 ⋅10 10 ⋅10<br />
11314 + + 28<br />
10 10<br />
= = 10 = 10<br />
34 +− ( 7) 27<br />
10 10<br />
2428b<br />
28−27 1<br />
1 1 1<br />
( −2) −8<br />
8<br />
−3<br />
−( − 2) =− =− =<br />
3<br />
2429a<br />
1<br />
−1 −1<br />
⎛4⎞ 4 1<br />
4 1 3 3<br />
⎜ ⎟ = = = ⋅ =<br />
−1<br />
⎝3⎠ 3 1 4 1 4<br />
1<br />
3<br />
2429d<br />
1<br />
−2<br />
−2 ⎛4⎞ 1<br />
(0,8) = 1<br />
⎜ ⎟ = = =<br />
2 2<br />
⎝5⎠ ⎛4⎞ 4<br />
⎜ ⎟ 2<br />
⎝5⎠ 5<br />
1 25 25<br />
⋅ = = 25 16<br />
1 16 16<br />
2430b<br />
1 1 1<br />
= = = 3 3<br />
27 3⋅3⋅3 3<br />
2431b<br />
6<br />
6<br />
6 = 6<br />
−8<br />
−−− 8 ( 14)<br />
= 6 =<br />
−14<br />
−+ 814 6<br />
2432b<br />
− 3<br />
(0,2) = 125<br />
0.2 ^ -3<br />
−3<br />
2427c<br />
(10 ) = 10 = 10<br />
−1 −2 ( −1)( ⋅ −2)<br />
2<br />
2427 f<br />
0 −8<br />
16<br />
10 ⋅10⋅10 ⋅ 10 =<br />
10 = 10 = 10<br />
0++− 1 ( 8) + 16 0+−+ 1 8 16 9<br />
2428c<br />
2430c<br />
813 ⋅ = 33333 ⋅ ⋅ ⋅ ⋅<br />
4 −6 −2<br />
= 3 ⋅ 3 = 3<br />
−6 −6<br />
2431c<br />
−2<br />
5 3<br />
3 ⋅3<br />
3<br />
= = 3<br />
−3 −3<br />
3 3<br />
2432c<br />
− 2<br />
(0,5) = 4<br />
0.5 ^ -2<br />
10<br />
( 1) 1<br />
− − =−<br />
37<br />
2429b<br />
1<br />
−2 −2<br />
⎛2⎞ 2 2<br />
2 1 9 9<br />
⎜ ⎟ = = = ⋅ =<br />
−2<br />
⎝3⎠ 3 1 4 1 4<br />
2<br />
3<br />
6<br />
2430d<br />
27 333 ⋅ ⋅ 3<br />
= =<br />
3 3 3<br />
3 −− ( 4) 7<br />
= 3 = 3<br />
−4 −4 −4<br />
2431d<br />
0 10 10<br />
5 ⋅5<br />
5<br />
= = 5<br />
−2 −2<br />
5 5<br />
2432d<br />
− 3<br />
(0,4) =<br />
15,625<br />
0.4 ^ -3<br />
3<br />
12