SOLUTION: how do you factor this?: {{{3xy-12x-7y-28}}}

Question 12940: how do you factor this?:

Answer by longjonsilver(2297) (Show Source): You can put this solution on YOUR website!
you have to try a few approaches.

The first would be to look at the first 2 terms and then at the last 2 terms:

3x(y-4) - 7(y+4)

Now, you can do nothing more with this, however, i think you have written a sign wrong somewhere in your question, as the 2 brackets, i guess, should be the same, something like 3x(y-4) - 7(y-4).

Check your question.

Anyway, you would then look at both expressions and see the common one, here the (y-4), and so we could factor that out, as (y-4)(3x-7).

Jon.

RELATED QUESTIONS
How do you factor this expression... (answered by kiru_khandelwal)

How do you factor this problem:... (answered by Edwin McCravy)

how do you factor... (answered by TX911)

how do you do this? simplify (all positive exponents) {{{(3x^2-3xy)/(3x^2+3xy)}}} (answered by jim_thompson5910)

How do you factor this out:... (answered by checkley77)

How do you factor this trinomial? 12x^2 + 5xy - 3y^2 Thank... (answered by richwmiller)

Please Factor:... (answered by rapaljer)

How do you factor 8x^3y-3xy^2=xy^4 step by... (answered by MathLover1)

how do you factor this problem?... (answered by mananth)