Question

Which expression is equal to 3√54 -4√24
A -11√6
B √6
C 11 √6
D-√6

Answer 1

B

Explanation:

Answer 2

let's start by getting both squares as the same number

`3 √(54) = 3 √(9 * 6) = 3 * 3 √(6) = 9 √(6)`
and

`4 √(24) = 4 √(4 * 6) = 2 * 4 √(6) = 8 √(6)`
now we can subtract!


`9 √(6) - 8 √(6) = √(6)`

so our answer is B