Question

evaluate √x + 21 when x = 4
write the answer in simplified radical form.

25

23

10

5

Answer 1

sqrt ( x + 21), right?

Answer 2

If so, what is 21 + 4 = ?

Answer 3

25

Answer 4

Good. What is sqrt(25) = ?

Answer 5

5

Answer 6

but 25 cant be simplified

Answer 7

????

Answer 8

25 can't be simplified anymore, but sqrt (25) can be simplified to 5.

Answer 9

so the answer is 5?

Answer 10

Yes :)

Answer 11

thanks

Answer 12

one more problem?

Answer 13

I have to go now. Have a great day!

Answer 14

well thanks for your help!

Answer 15

It was my pleasure!