Asked by Elise
How does 3x(4x+5)-5(4x+5) factor out to be (4x+5)(3x-5) ? This may be wrong, because I wrote this answer in my notes, but could some one please explain this to me? Also, do you have any tips on factoring? I understand the concept when I see an example(Usually), but I have a very hard time actually doing it.
Answers
Answered by
drwls
You have two different terms (3x and -5) that both multiply (4x + 5) . You can add these two terms together into (3x - 5)
You are using the "distributive" rule that
(x + y)z = xz + yz
but in this case you are using it "backwards".
x, y and z can be constants or algebraic terms
You are using the "distributive" rule that
(x + y)z = xz + yz
but in this case you are using it "backwards".
x, y and z can be constants or algebraic terms
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.