SOLUTION: solve the quadratic equation: (x+3)^2=81 please help thanks

Question 52871: solve the quadratic equation:
(x+3)^2=81
please help thanks
Answer by funmath(2933) (Show Source): You can put this solution on YOUR website!
Using the square root property:

x+3=+or-9
x+3-3=-3+or-9
x=-3-9
x=-12
and
x=-3+9
x=6
x=-12;x=6
Not all teachers require set notation:
In set notation x={-12,6}
RELATED QUESTIONS
solve the quadratic equation: {{{(x+3)^2=81}}} thanks a... (answered by rchill)

Please help with the following: Use the quadratic formula to solve the quadratic... (answered by adamchapman)

Use the Quadratic Formula to solve the equation. �x^2 + 7x = 8 Help please.... (answered by ReadingBoosters)

please help. Solve the following mathematically a. 3=4ln(x-2)= 11 b. log(13x-1)-... (answered by Alan3354)

Solve the quadratic equation... (answered by checkley77)

Solve the quadratic equation... (answered by Alan3354)

Please help solve this quadratic equation using the quadratic formula. {{{ 0.4x^2 + x... (answered by stanbon)

Please help me. Use the square root property to solve the equation. x square = -81 (answered by jim_thompson5910)

Please solve the equation using the quadratic formula. Thanks!... (answered by Alan3354,rothauserc)