Asked by Anonymous
I need help factoring 2y^2-2y-24. The answer I got was 2(y+3)(y+3). However the correct answer is 2(y+3)(y-4).
Answers
Answered by
Reiny
If you had expanded your answer, you would have seen that it was wrong.
How could you possible end up with those negative terms in the original when everything you have is positive ???
2y^2-2y-24
= 2(y^2 - y - 12)
what are two numbers that when multiplied yield -12 and have a sum = -1 ?
Clearly -4 and 3
so...
2(y^2 - y - 12)
= 2(x - 4)(x + 3)
How could you possible end up with those negative terms in the original when everything you have is positive ???
2y^2-2y-24
= 2(y^2 - y - 12)
what are two numbers that when multiplied yield -12 and have a sum = -1 ?
Clearly -4 and 3
so...
2(y^2 - y - 12)
= 2(x - 4)(x + 3)
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.