Question 1026528
{{{(x+9)^2-81=0}}}
First, add 81 to both sides.
{{{(x+9)^2=81}}}
Now, take the square root of both sides.
{{{sqrt((x+9)^2)=sqrt(81)}}}
{{{x+9=9}}} and {{{x+9=-9}}}
Subtract 9 from both sides for both equations.
ANSWER: {{{x=0}}} and {{{x=-18}}}