Question

Which of the following is a radical equation?

Answer 1

Answer:

C. $\sqrt{x}+3=13$

Step-by-step explanation:

We know that,

A radical equation is the equation in which the variable is under the radical.

According to the options, we see that,

In the equation $\sqrt{x}+3=13$, the variable is under the radical.

All other equations have constant number under the radical.

Thus, we get,

Equation C i.e. $\sqrt{x}+3=13$ is a radical equation.

Answer 2

$\fbox{\text{Option C}}$ is correct as $\sqrt x+3 = 13$ is radical equation because the variable is under the radical and the radicand is $x$.

Further explanation:

Radical can be describing as a square root, a cube root, a fourth root or higher root.

Radical equation can be defined as any equation that contains a radical on the variable is known as the radical equation.

The term under the radical symbol is known as radicand.

Option A is not correct.

Here, $x\sqrt 3= 13$ is not radical equation because the radical is on a constant term 3 not on the variable.

Option B is not correct.

Here, $x+\sqrt 3=13$ is not radical equation because the radical is on a constant term 3 not on the variable.

Option C is correct.

Here, $\sqrt x+3=13$ is radical equation because the variable is under the radical and the radicand is  .

Option D is not correct.

Here,  $x+3 =\sqrt {13}$ is not radical equation because the variable is not under the radical.

The equation $\sqrt x+3=13$ is a radical equation. Therefore $\fbox{\text{Option C}}$ is correct.

Learn more:

1. Learn more about functions brainly.com/question/2142762

2. Learn more about range of the functions brainly.com/question/3412497

3. Learn more about relation and function brainly.com/question/1691598

Answer details:

Grade: High school

Subject: Mathematics

Chapter: Number system

Keywords: functions, equation, radical equation, radical, square root, cube root, fourth root, variable, radicand, term, under, contains describe.