Question 122532

{{{(8x+5)^2 = 16}}}

  {{{sqrt((8x+5)^2) = sqrt(16)}}}  

  {{{8x+5 = 4}}}

    {{{8x = 4 - 5}}}  

    {{{8x = - 1}}}

      {{{x = -1/8}}}  


check:

{{{(8(-1/8)+5)^2 = 16}}}

{{{(cross(8)(-1/cross(8))+5)^2 = 16}}}

{{{(-1+5)^2 = 16}}}

{{{(4)^2 = 16}}}

{{{16 = 16}}}