Solve The Equation??

This has no solution. You would subtract 5 from both sides and have sqrt(k) = -1.

It is possible for k to equal one, but it is assumed that we want positive square roots when there is a radical sign.

that's it! :)

√k = - 1
Option d

The answer is: d. no solution

D

At this level, I presume you're not allowed to know about imaginary numbers but look them up because they're interesting.

Algebra tells you that sqrt k = -1. There are many usful imaginary numbers, represented by including a lower-case "i" in the term, used in the next-algebra study, "i" is said to be the sqrt of -1.

So the answer is:

sqrt k= -1

k=i

The answer is d) no solution.
If you subtract 5 from both sides, you would have
sqrt(k) = -1

It is impossible for k to equal a negative number, because the range is all positive numbers including 0.

D. no solution.

d.
because you cant have the square root of a negative