Question

Solve for x if 2(5x + 2)2 = 48

Answer 1

x = 2

step  1  :

 (2 • (5x + 2) • 2) -  48  = 0

step  2  :

 4 • (5x + 2) -  48  = 0  

Pulling out like terms :

  20x - 40  =   20 • (x - 2)  

step  4  :

 20 • (x - 2)  = 0  

Equations which are never true :

     Solve :    20   =  0

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

  Solve  :    x-2 = 0  

Add  2  to both sides of the equation :  

                     x = 2