Question

Which of the following is a like radical to 3 sqrt 7x?

A. 4(3 sqrt 7x)
B. Sqrt 7x
C. X(3 sqrt 7)
D. 7 sqrt x

Answer 1

a

Explanation:

Answer 2

Options A and B

i.e., A. 4(3
`√(7x)`) and B.
`√(7x)`

Explanation:

Like radicals are similar to like terms.

For example,

x, 2x, -10x,
`(1)/(2) x`, 7.3x are like terms.

`xy^(2) , -9xy^(2) , 13y^(2) x` are some more examples of like terms.

Similarly, like radicals are:

`√(2) , -5√(2) , 1.1√(2)` etc.

Hence, from the given options, like radicals to
`3√(7x)` are:

A.
`4(3√(7x) )` and B.
`√(7x)`