SOLUTION: Factor completely (trinomial) -9xy^2+27y-3x^2y I tried setting it up with descending variables, but can't get it to work. -3x^2y-9xy^2+27= -3y(x^2+3xy-9)= -3y (x ) (x ) t

Algebra.Com
Question 522216: Factor completely (trinomial)
-9xy^2+27y-3x^2y
I tried setting it up with descending variables, but can't get it to work.
-3x^2y-9xy^2+27=
-3y(x^2+3xy-9)=
-3y (x ) (x ) there aren't 2 numbers that multiply to make negative 9 and add to make a positive 3.
Thank you,
Brenda Floyd
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
You did nothing wrong.  The final answer is -3y(x² + 3xy - 9)
Not all trinomials are factorable (using integers).  It is
important that students recognize the ones that are not factorable
and not try to factor them.  So leave the answer as:

-3y(x² + 3xy - 9)

Some students, not you of course, would try to factor it and
think the answer would be . 

Edwin
RELATED QUESTIONS

Factorize 3x^2(x-2y)^2+9xy^2(2y-x) Can you please help us to factorize it with step by... (answered by ikleyn,MathTherapy)
My question is to factor completely the following equation: 6x^2-7x-2 I have come... (answered by stanbon)
Simplifify 6x^2y^2 + 11xy + 4 all divided by 9x^2y^2 + 9xy - 4 I've tried and i cant... (answered by rapaljer)
Dear Sir/Madam, I am confronted with the following problem: "Simplify the... (answered by rapaljer)
Factor Completely: -9x^2 +12xy -4y^2 I tried -(9x^2 - 12xy +4y^2) Then I did this... (answered by Fombitz)
Factorize 3x^2(x-2y)^2+9xy^2(2y-x) Can you please help me us to factorize it by step by... (answered by ikleyn)
3x^4-9x^3y+3x^2y^2 Factor Polynomial Completely I don't understand how the steps go... (answered by RAY100,vleith)
I am factoring trinomials. Doing ok with some, but struggling with ones like one below.... (answered by MathLover1)
I am trying to solve a linear equation with three variables and I am stuck on this... (answered by KMST)