SOLUTION: Please help! Completly factor the following: 3x^3y - 12x^2y + 9xy This is as far as I got 3x x y Thanks, Lackinmath

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Please help! Completly factor the following: 3x^3y - 12x^2y + 9xy This is as far as I got 3x x y Thanks, Lackinmath      Log On


   

Question 56317: Please help!
Completly factor the following:
3x^3y - 12x^2y + 9xy
This is as far as I got 3x x y
Thanks,
Lackinmath
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
Hi lackinmath,
:
Completly factor the following:
3x%5E3y-12x%5E2y%2B9xy
3xy%28x%5E2%29%2B%283xy%29%28-4x%29%2B3xy%283%29
3xy%28x%5E2-4x%2B3%29
3xy(x___)(x____)
We need to fill the blanks with two numbers that multiply together to give you c=+3, but add together to give you b=-4.
-1*-3=3 and -3+-1=-4
highlight%283xy%28x-1%29%28x-3%29%29
Keep Calculating and you won't be lackinmath!!!
funmath