1)√5*√45

2)√12,5*√32

3)√4,5*√128

4)√13*√26*√2

5)√8*√50

6)√ 36/49

7)√ 5 4/9

8)√89/121

9)√3/√49

10)√7,2/√0,2

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Ответы и объяснения

2012-11-24T15:16:28+04:00

1) √5*√45 = √225 = 15

2) √12,5*√32 = √400 = 20

3) √4,5*√128 = √576 = 24

4) √13*√26*√2 = √676 = 26

5) √8*√50 = √400 = 20

6) √36/49 = 6/7

7) √5(4/9) = √49/9 = 7/3 = 2(1/3)

8) √89/121 = (√89)/(11)

9) √3/√49 = (√3)/(7)

10) √7,2/√0,2 = (√72/10)/√2/10 = √72/2 = √36 = 6