1)
√х = 4,
(√х)² = 4²,
х = 16,
2)
√у = 0,4,
(√у)² = 0,4²,
у = 0,16,
3)
3√х = 7,
√х = 7/3,
(√х)² (7/3)²,
х = 49/9,
х = 5 4/9,
4)
10√z = 3,
√z = 3/10,
(√z)² = (3/10)²,
z = 9/100 (или 0,09)
-3 1.5 4.5
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D E F
(154800:10:9-47*6)*(97840:80+77)=1438*1300=1869400
1. 154800:10=15480
2. 15480:9=1720
3. 47*6=282
4. 1720-282=1438
5. 97840:80=1223
6. 1223+77=1300
7. 1438*1300=1869400
76000*90:1000-96:(48:8)*109-5400:600=6840-1744-9=5087
1. 76000*90=6840000
2. 6840000:1000=6840
3. 48:8=6
4. 96:6=16
5. 16*109=1744
6. 5400:600=9
7. 6840-1744=5096
8. 5096-9=5087