SOLUTION: Factor the expression 49x^2-42xy+9b^2 I got the answer (7x-3y)(7x-3y), something tells me this is wrong however. I've worked on it for the last 3 hours now and just need some hel

Algebra ->  Divisibility and Prime Numbers  -> Lessons -> SOLUTION: Factor the expression 49x^2-42xy+9b^2 I got the answer (7x-3y)(7x-3y), something tells me this is wrong however. I've worked on it for the last 3 hours now and just need some hel      Log On


   

Question 550489: Factor the expression 49x^2-42xy+9b^2
I got the answer (7x-3y)(7x-3y), something tells me this is wrong however. I've worked on it for the last 3 hours now and just need some help I guess.
Found 2 solutions by Edwin McCravy, scott8148:
Answer by Edwin McCravy(20086) About Me  (Show Source):
You can put this solution on YOUR website!
(7x-3y)(7x-3y) is correct except there is one more step.
Since both factors are the same, you can write that simpler as
(7x-3y)²

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
if the expression is written correctly, it is not factorable

if it is this "49x^2-42xy+9y^2"' then your factors are correct

if it is this "49x^2-42xb+9b^2"' then the factors are ___ (7x-3b)(7x-3b)