Multiply (s+t)(s^2-st+t^2)?

2008-07-16 7:19 am

Please help. I figured it out on paper and it did not look right to me. I got s^3+t^3....please someone help.

更新1:

Thanks for the answers..I just wanted reassurance.

更新2:

Im a college freshman in college lol I wish I didnt have to see this stuff I hate math but thank god this is my last class of it

回答 (5)

2008-07-16 7:23 am

✔ 最佳答案

You got it!

You just distribute the (s+1) term, multiply, and cancel like terms

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2008-07-16 7:57 pm

(s + t)(s^2 - st + t^2)
= s*s^2 + t*s^2 - s*st - t*st + s*t^2 + t*t^2
= s^3 + s^2t - s^2t - st^2 + st^2 + t^3
= s^3 + t^3

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2008-07-16 3:08 pm

sÂ³ - sÂ² t + s tÂ²
___sÂ² t - s tÂ² + tÂ³

sÂ³ + tÂ³

We agree !

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2008-07-16 2:24 pm

s^3 + t^3. you are right, so i presume there is no need to show work

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2008-07-16 2:28 pm

omg what grade are you in? im a freshman in high school and havent seen anything like that. wow! hard stuff you got there.

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