a. 2√(x) and √(2x)

b. 4√(x) and 5√(y)

c. x√(5) and y√(5)

d. √(5) and √3:(5)

the correct answer is C.

The argument of the radical is 5,

They can be added.

X √( 5) + Y √ ( 5) = ( X +y) √(5)

a. 2√(x) and √(2x)

b. 4√(x) and 5√(y)

c. x√(5) and y√(5)

d. √(5) and √3:(5)

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the correct answer is C.

The argument of the radical is 5,

They can be added.

X √( 5) + Y √ ( 5) = ( X +y) √(5)

## Comments

## Like radicals are the ones that have the same argument( value under the radical) ,and same order of roots, but different coefficient.

## They are only radicals( irrational numbers that can be added or subtracted)

## i.e. 2√2 + 3√2 = 5 √2

## 3

^{3}√3 + 5^{3}√3^{ = }8^{ 3}√8