Question

Which of the following is a radical equation?

Answer 1

x^2=16 is a radical equation

Answer 2

D)
`7√(x) = 14`

Explanation:

If x is under a radical symbol, then it is called radical equation.

For example,
`√(x)  = 2`

`√(x-2) = 5`

From the given equations, we have to find in which equation x under radical.

x +
`√(5) = 12`, here x is not under radical.

`x^(2)  = 16`, here also x is not under radical.

3 + x√7 =13, here x is not under radical

7
`√(x) = 14`

Here x is under the radical symbol.

Therefore, the answer is
`7√(x) = 14`