SOLUTION: Hi, I have a question for you and it would be greatly appreciated if you could assest me in this. The question is: I have to show in step how I arrived at the answer for w^2+30w

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Hi, I have a question for you and it would be greatly appreciated if you could assest me in this. The question is: I have to show in step how I arrived at the answer for w^2+30w      Log On


   



Question 741336: Hi,
I have a question for you and it would be greatly appreciated if you could assest me in this. The question is: I have to show in step how I arrived at the answer for w^2+30w+81.
Thanks in advance
K. Bradley

Found 2 solutions by richwmiller, MathLover1:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
find factors of 81 which add up to 30
81*1
9*9=81
3*3*3*3=81
3*27
3+27=30
(x+3)*(x+27)
x=-3 and x=-27

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

w%5E2%2B30w%2B81...write 30w as 3w%2B27w
=w%5E2%2B3w%2B27w%2B81...group first two and second two terms together
=%28w%5E2%2B3w%29%2B%2827w%2B81%29..factor
=w%28w%2B3%29%2B27%28w%2B3%29
=%28w%2B3%29%28w%2B27%29