add 3√21+7√21 1 point

multiple choice answers-
10√21.
10√42.
√24+√28.
√52

9 answers

The sum of 3√21 and 7√21 is 10√21.
add √19+√19

√20
2√38
2√19
√40
The sum of √19 + √19 is 2√19.
add ^3√22+3√22+√22

5√22
3^√22 +4√22
5√66
3^√22+4√44
The sum of ^3√22 + 3√22 + √22 is 5√22.
subtract 8√23-√23

8√46
7√46
8√23
7√23
The subtraction of 8√23 - √23 is 7√23.
Jake runs 7√6 miles on monday and 5√6 on tuesday.What is the difference in milles run each day.

4√6
4√12
2√12
2√6
The difference in miles run each day is 2√6 miles.