Сравните: 1)√400 и √625 2)3√0.09 и √0.81 3)√1/25 и 2√0.04 -7√9/49 и -√16

Question

Сравните:
1)√400 и √625
2)3√0.09 и √0.81
3)√1/25 и 2√0.04
-7√9/49 и -√16

Answer 1

1)√400=20
√625=25

⇒√400<√625</strong>

2)3√0.09=3*0.3=0.9
√0.81=0.8
⇒3√0.09=√0.81
3)√1/25=1/5=0.2
2√0.04=2*0.2=0.4
⇒√1/25<2√0.04</strong>