Answer: (3x-5)
Step-by-step explanation:
first we set it up x+3[tex]\sqrt{3x^2 +4x-15}[/tex]
we want to get rid of 3x^2 first so, x*3x= 3x^2
then we subtract x+3[tex]\sqrt{3x^2 +4x-15}[/tex]
distribute :3x*3=9x - (3x^2 +9x)
0 -5x
now we want to get rid of -5x, we use -5
-5(x+3)=-5x-15 x+3[tex]\sqrt{-5x-15}[/tex]
-(-5x-15)
0, so reminder of 0
