Does radical mean square root?, because radical can mean square root, cube root, fourth root, etc.
Well, I'm going to assume that radical = square root
So, if you have two square root functions, you can multiply the numbers within the square root, so you now have  , which I'm not sure if you want it simplified or not
, which I'm not sure if you want it simplified or not
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Let  be the greater number and
 be the greater number and  be the smaller number. We know that their difference is 15, so we have
 be the smaller number. We know that their difference is 15, so we have

Then, we have the following information: if we add twice the greater (2x) and 8 (2x+8), the result is 3 times the lesser (3y) minus four (3y-4). So, we have

So, we have the follwing system:

From the first equation, we can derive  , and substitute this expression in the second equation to get
, and substitute this expression in the second equation to get

Substitute this value for y in the first equation to get

 
        
             
        
        
        
This doesn’t make any sense
        
                    
             
        
        
        
The 2 small black lines through the sides of the triangle indicate that the 2 sides are the same length.
Because the 2 sides are the same the 2 bottom angles are also the same.
This means that 9x +3 = 84
Now we can solve for x:
9x +3 = 84
Subtract 3 from each side:
9x = 91
Divide both sides by 9:
x = 81 / 9
x = 9