Areteem: Please help me on math challenge II-A week four homework

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Please help me on math challenge II-A week four homework

I have one question on the handout.

When factoring on multiple questions, I get this result or something close to this: nx^4+nx^3+nx^2+nx+n (n=a number)

I know I didn't finish factoring, so I tried to factor more. The problem here is, I don't understand how to factor the result above. So I went on redshelf.com and looked up the examples we did in class. After looking at it, I still cannot understand. Can someone please explain how to factor problems like the one above clearly?

Thank you so much!

Yoyo Yang

Hi Yoyo!

It would be helpful if you could post more information regarding this question. However, one way to start could be by using a variable like u or v to substitute for certain expressions in the question.

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Thank you Mr. John! One of the questions I had a problem on was problem 25. If you can, may you please show me a kind of trick that can help factor this kind of problems?

Thank you again!

Yoyo Yang

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What you want to notice here is that this problem looks a lot like the expansion of (x+3)^3. In fact, the problem is equal to (x+3)^3 - x - 3 = (x+3)^3 - (x+3). Let me know if that helps!

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Thank you!

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