√k + 5 = 4
a. k = -1
b. k = 1
c. k = 81
d. no solution
2007-12-21 05:42:12 · 8 answers · asked by . 1 in Science & Mathematics ➔ Mathematics
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! :)
2007-12-21 05:45:41 · answer #1 · answered by Marley K 7 · 0⤊ 0⤋
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
2007-12-21 05:52:07 · answer #2 · answered by Ken 7 · 0⤊ 0⤋
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.
2007-12-21 05:49:45 · answer #3 · answered by Daemon 3 · 0⤊ 0⤋
D
At this level, I presume you're not allowed to know about imaginary numbers but look them up because they're interesting.
2007-12-21 05:53:17 · answer #4 · answered by Joe Bloggs 2 · 0⤊ 0⤋
The answer is: d. no solution
2007-12-21 05:56:04 · answer #5 · answered by An ESL Learner 7 · 0⤊ 0⤋
D. no solution.
2007-12-21 07:25:11 · answer #6 · answered by njpoolgirl 2 · 0⤊ 1⤋
d.
because you cant have the square root of a negative
2007-12-21 05:45:10 · answer #7 · answered by Chase 1 · 0⤊ 1⤋
√k = - 1
Option d
2007-12-21 06:11:21 · answer #8 · answered by Como 7 · 2⤊ 0⤋