√(64)√(121)√(225)√(625)Do you know these problems

Question

`√(64)`
`√(121)`
`√(225)`
`√(625)`Do you know these problems

Answer 1

We need to calculate the squared root of 64 in this way:

-Factor the number 64=8^2

-Apply the radical rule:

`\sqrt[]{a^2}=a\text{ a}\ge0`

`\sqrt[]{64}=\sqrt[]{8^2}=\text{ 8}`

The others roots can be solved in the same way.