3x3y + 12xy - 3x2y - 12y

Part A: Rewrite the expression so that the GCF is factored completely.

Question

3x3y + 12xy - 3x2y - 12y

Part A: Rewrite the expression so that the GCF is factored completely.

cwrw238 · Answer

firstly what is the GCF of the numbers?

undeadknight26 · Answer

how do i find that?  I forgot sorry...

cwrw238 · Answer

the greatest number which will divide into 3 , 12  = 3  right?

cwrw238 · Answer

now look at the variables (the letters) which letter is common to all 4 terms?

undeadknight26 · Answer

y right?

cwrw238 · Answer

oooh  sorry i've slipped up here...

undeadknight26 · Answer

huh?

cwrw238 · Answer

I'm puzzled by this one

cwrw238 · Answer

Ok i've got confused because of the way the terms are written
first bring all the letters together
3x3y + 12xy - 3x2y - 12y
= 9xy + 12xy - 6xy - 12y
= 9xy + 6xy - 12y
= 15xy - 12y

OK now the GCF of 15xy and 12y  is 3y

so we get
  3y(5x - 4)





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undeadknight26 · Answer

thats it?

cwrw238 · Answer

yes  it all boils down to that

cwrw238 · Answer

the way the problem was presented was a little confusing 
note that 3x3y = 9xy  and 3x2y = 6xy