Question

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Answer 1

OPTION - 3: -m²n³
`$ √(n) $`

Explanation:

We know that
`$ √(ab) = √(a)\sqrt{{b} $`

Also,
`$ \sqrt{m^(2)} = m $`

Now we are to simplify:
`$ - √(m^4n^7) $`

`$ \implies - √(m^4)√(n^7) $`

`$ \implies - √((m^2)^2)√(n^6.n) $`

`$ \implies-  m^2 √((n^3)^2.n) $`

`$ \implies - m^2 n^3√(n)`

∴
`$ √(m^4n^7) =  -m^2n^3√(n) $`