√x plus 3√x equals what???????

Question

 

F. 3√x
G. 4√x
H. 4√2x
J. 3√2x
K. none of these

Answer 1

√x + 3√x

Take out factor √x

√x [1 + 3]

√x [4]

Commutative property of multiplication

For any real numbers a and b then ab = ba

4√x.

Answer 2

 

√x plus 3√x = √x+ 3√x
group like terms using distributive property: a(b + c) = ab + ac
=(1+ 3)√x
=4√x