Question

Help plzz I think it is 1 or 2 ..... By The square root property, if k is a real number and x^2=k, then what is x equal to? 1. √k 2. =| √k 3. -√k 4. k^2

Answer 1

`\Large \boxed{2. \ x=\pm √(k)}`

Explanation:

`x^2 =k`

k is a real number.

We take the square root of both sides of the equation.

`√(x^2 ) =\pm √(k)`

Simplifying the equation.

`x=\pm √(k)`

Answer 2

x = ±√k

Explanation:

If:

`x^2 = k`

We'll take square root on both sides

=>
`√(x^2) = +/- √(k)`

=> x = ±√k