Math
posted by Lilly .
Solve the equation by factoring, by finding square roots, or by using the quadratic formula.
3(x+4)^2= 27

Math 
Bosnian
3 ( x + 4 ) ^ 2 =  27 Divide both sides with 3
( x + 4 ) ^ 2 =  9
The left hand side is a perfect square,so you can apply the square root method :
x + 4 = + OR  sqrt (  9 )
x = + OR  sqrt (  9 ) 4
( Remark:
sqrt (  9 ) = sqrt (  1 * 3 ^ 2 ) =
+ OR  3i
where i = Imaginary unit = sqrt (  1 )
)
x = + OR  ( 3 i )  4 
Math 
Henry
post it.
Respond to this Question
Similar Questions

Algebra2
Find the polynomials roots to each of the following problems: #1) x^2+3x+1 #2) x^2+4x+3=0 #3) 2x^2+4x5 #3 is not an equation. Dod you omit "= 0" at the end? 
Algebra
1)Solve by factoring:5x^2=419x answer=4,1/5 2)Which quadratic equation has roots 7 and 2/3? 
algebra
1)Solve by factoring:5x^2=419x answer=4,1/5 2)Which quadratic equation has roots 7 and 2/3? 
math
1. solve by using the quadratic formula. 5x^2+x=3 2. solve by completing the square. x^2=5x+2 3.solve by using the square roots method. 5(x2)^2=3 
Math
Solve the equation by factoring, by finding square roots, or by completing the square. 4(x+8)^2=144 I'm not sure if I'm suppose to divide or multiply the 4 to both sides.. 
Math
2x(x+3) = 0 Is there a way to solve that using the below methods? 
Algebra II
1)What method(s) would you choose to solve the equation: x2 + 2x  6 = 0 A. Square roots; there is no xterm. B. Quadratic formula, graphing; the equation cannot be factored easily since the numbers are large. C. Factoring; the equation … 
College Algebra 1
Using the factoring method, solve for the roots of quadratic equation 4x^2=16 
Algebra 1
Which method is the best method for solving the equation 8x^2123x+3=0 square roots factoring graphing quadratic formula my answer is quadratic formula 
Algebra
Solve the equation. Use factoring or the quadratic formula, whichever is appropriate. Try factoring first. If you have any difficulty factoring, then go right to the quadratic formula. (Enter your answers as a commaseparated list.) …