1) √4 * 9 = 2 * 3 = 6

2) √25 * 64 = 5 * 8 = 40

3) √100 * 36 = 10 * 6 = 60

4) √81 * 64 = 9 * 8 = 72

5) √4 * 144 = 2 * 12 = 24

6) √121 * 49 = 11 * 7 = 77

7) √81 * 100 * 4 = 9 * 10 * 2 = 180

8) √25 * 16 * 9 = 5 * 4 * 3 = 60

9) √0,25 * 81 = 0,5 * 9 = 4,5

10) √0,64 * 0,36 * 9 = 0,8 * 0,6 * 3 = 1,44

11) √42 * 168 = √7 * √6 * √6 * √7 * √4 = 7 * 6 * 2 = 84

12) √72 * 32 = √8 * √9 * √8 * √4 = 8 * 3 * 2 = 48

13) √810 * 40 = √81 * √10 * √10 * √4 = 9 * 10 * 2 = 180

14) √2,5 * 14,4 = √25/10 * √144/10 = 5/10 * 12/10 = 60/10 = 6

15) √90 * 6,4 = √9 * √10 * √64/10 = 3 * 8 = 24

16) √75 * 48 = √15 * √5 * √6 * √8 = √90 * √40 = √9 * √10 * √4 * √10 = 3 * 10 * 4 = 120

17) √45 * 80 = √9 * √5 * √8 * √10 = 3 * √5 * √2 * √4 * √2 * √5 = 3 * 5 * 2 * 2 = 60

18) √4,9 * 360 = √49/10 * √36 * √10 = 7 * 6 = 42

19) √160 * 6,4 = √16 * √10 * √64/10 = 4 * 8 = 32

20) √7 * 42 * 18 * 27 = √7 * √6 * √7 * √6 * √3 * √3 * √9 = 7 * 6 * 3 * 3 = 378

1) √12 = √3 * √4 = 2√3

2) √18 = √2 * √9 = 3√2

3) √27 = √3 * √9 = 3√3

4) √48 = √3 * √16 = 4√3

5) √54 = √6 * √9 = 3√6

6) √80 = √16 * √5 = 4√5

7) √125 = √25 * √5 = 5√5

8) √108 = √54 * √2 = √6 * √9 * √2 = √2 * √3 * 3 * √2 = 6√3

9) 3√8 = 3 * √4 * √2 = 6√2

10) 4√75 = 4 * √3 * √25 = 20√3

11) 6√250 = 6 * √25 * √10 = 30√10

12) √180 = √18 * √10 = √9 * √2 * √2 * √5 = 6√5

13) √363 = √121 * √3 = 11√3

14) √432 = √27 * √8 = √3 * √9 * √4 * √2 = 6√6

15) √450 = √45 * √10 = √5 * √9 * √2 * √5 = 15√2

16) √675 = √25 * √27 = 5 * √9 * √3 = 15√3

17) √845 = √5 * √169 = √5 * √13 * √13 = 13√5

18) 1/2 √200 = 1/2 * √2 * √100 = 1/2 * √2 * √10 * √10 = 5√2

1) 3√2 = √9 * √2 = √18

2) 2√5 = √4 * √5 = √20

3) 4√3 = √16 * √3 = √48

4) 3√7 = √9 * √7 = √63

5) 1/2 √8 = √1/4 * √8 = √8/4 = √2

6) 2/3 √18 = √4/9 * √18 = √8

7) 6√x = √36 * √x = √36x

8) 5√y = √25 * √y = √25y

9) 3 √2/3 = √9 * √2/3 = √6

10) 5√0,2 = √25 * √0,2 = √25 * √1/5 = √5

11) 4 √3/4 = √16 * √3/4 = √12

12) a√a = √a² * √a = √a³

1) 6√2 + 5√18 = 6√2 + 5 * √2 * √9 = 6√2 + 15√2 = 21√2

2) 5√12 — 2√27 = 5 * √3 * √4 — 2 * √9 * √3 = 10√3 — 6√3 = 4√3

3) 2√48 + √27 + √12 = 2 * √6 * √8 + √3 * √9 + √3 * √4 = 2 * √2 * √3 * √4 * √2 + √3 * √9 + √3 * √4 = 8√3 + 3√3 + 2√3 = 13√3