add 2 square root 8 + 3 square root 8

9 answers

To add 2√8 + 3√8, you can combine the like terms, which means combining the coefficients and the square root term:

2√8 + 3√8 = (2 + 3)√8

Simplifying the coefficient:

(2 + 3)√8 = 5√8

Therefore, 2√8 + 3√8 = 5√8.
Apologies for the confusion. Let's solve it correctly.

Given: 2√8 + 3√8

Both terms have the same square root (√8), so we can combine them:

2√8 + 3√8 = (2 + 3)√8

Simplifying the coefficients:

(2 + 3)√8 = 5√8

Therefore, 2√8 + 3√8 = 5√8.
add sqrt 31 + sqrt 31
To add √31 + √31, we follow a similar process. Since both terms have the same square root (√31), we can combine them:

√31 + √31 = (1 + 1)√31

Simplifying the coefficients:

(1 + 1) √31 = 2√31

Therefore, √31 + √31 = 2√31.
subtract 7 sqrt 5 - 4 sqrt 5
To subtract 7√5 - 4√5, we can follow the same process. Since both terms have the same square root (√5), we can combine them:

7√5 - 4√5 = (7 - 4)√5

Simplifying the coefficients:

(7 - 4)√5 = 3√5

Therefore, 7√5 - 4√5 = 3√5.
sqrt 29 - sqrt 29
√29 - √29 = 0

Therefore, √29 - √29 equals zero.