Question

Solve for x
cubed (sqrt 2x+1)=3

Answer 1

Solve the equation for x:

∛(2x + 1) = 3


Cube both sides of the equation above:

[ ∛(2x + 1) ]³ = 3³

2x + 1 = 27

2x = 27 – 1

2x = 26
 
           26
x  =  ———
            2

x = 13


Solution set:   S = {13}.


I hope this helps. =)


Tags:  irrational equation cube root sqrt solution solve algebra

Answer 2

I'm guessing ∛(2x+1)=3
cube both sides
2x+1=27
minus 1 both sides
2x=26
divide by 2
x=13