add 3√21+7√21 1 point
multiple choice answers-
10√21.
10√42.
√24+√28.
√52
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.
To add the expressions 3√21 and 7√21, you can combine the like terms. In this case, √21 is the common term.
To add the coefficients (numbers) in front of the square roots, you simply add them together.
2√21 + 7√21 = (3+7)√21 = 10√21.
Therefore, the correct answer is 10√21.