Question 82864
12x-7 times the square root of x + 1=0

{{{(12x-7)(sqrt(x+1))=0}}}  

{{{(12x-7)=0}}}  add 7 to both sides
{{{12x=7}}} divide both sides by 12

{{{x=7/12}}}--------------------one answer

and

{{{sqrt(x+1)=0}}}  square both sides


{{{x+1=0}}}  subtract 1 from both sides

{{{x=-1}}}----------------------------------the other answer

CK

{{{(12(7/12)-7)(sqrt((7/12)+1))=0}}}

{{{0=0}}}
and

{{{(12(-1)-7)(sqrt(0))=0}}}

{{{0=0}}}


Hope this helps------ptaylor