Question

12z^4-21z^3-45z^2

Answer 1

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Answer 2

thank you I can assure you this is not a question for an exam.

Answer 3

ask yourself...what do ALL these terms have in common? are they all divisible by a number? if so...you can "factor out" these similar things

in this case...each number is divisible by 3 right?

12z^4-21z^3-45z^2
so

3(4z^4 - 7z^3 -15z^2)

now each one has at least 1 z^2 in it correct? so

3z^2(4z^2 - 7z -15)

now you can simplify more...i'll leave that to you :)

Answer 4

Hi John Weldon. Yes, each one has a z in it. that's the answer I came up with and it was wrong...

Answer 5

Hi John Weldon. Yes, each one has a z in it. that's the answer I came up with and it was wrong...

Answer 6

Hi John Weldon. Yes, each one has a z in it. that's the answer I came up with and it was wrong...

Answer 7

well that isn't your full answer...

we have

3z^2(4z^2 - 7z -15)

(4z^2 - 7z -15) looks like it can be factored right?

(4z +5)(z-3)
4z² - 12z +5z - 15
4z² - 7z - 15 right

so our final answer would be

3z²(4z+5)(z-3)

i believe...that is as far as i think it will simplify