Question

Simplify this radical. /84

Answer 1

`√(84)`

`√(4 * 3 * 7)`

`2√(21)`

Answer 2

`√(84)=2√(21)`

Explanation:

we need to simplify the radical
`√(84)`

84 can be written as
`2 \cdot 2 \cdot 3 \cdot 7`

`√(84)=√(2 \cdot 2 \cdot 3 \cdot 7)`

square root (2*2)= 2

`√(84)=2√(3 \cdot 7)`

`√(84)=2√(21)`