1. what is the simplest form of the radical expression? 4 fourth root of two x+ 6 fourth root of two x (1 point) 10fourth root of two x 10 fourth root of four x 20 fourth root of two x not possible to simplify,

Your expression is:
4·⁴√(2x) + 6·⁴√(2x)

As you can see, the radicals are exactly the same: same index, same radicand.

Therefore you can treat it as if it was:
4 apples + 6 apples 
which is 10 apples, 

or in your case:
10·⁴√(2x)

Hence, the correct answer is option A.

3x+9+4x+x=8x+9that's the answer for your question.