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(a) Compute the sum \[ 101^2 - 97^2 + 93^2 - 89^2 + \cdots + 5^2 - 1^2.\]
(b) Compute the sum \[ (a +(2n+1)d)^2- (a + (2n)d)^2 +(a + (2n-1)d)^2 - (a+(2n-2)d)^2 + \cdots + (a+d)^2 - a^2.\]

 

I would prefer it if the answers are not in latex. Thank you so much for helping me

 Dec 3, 2019
 #1
avatar+978 
+2

This is \( 101^2 - 97^2 + 93^2 - 89^2 + \cdots + 5^2 - 1^2.\)

And \((a +(2n+1)d)^2- (a + (2n)d)^2 +(a + (2n-1)d)^2 - (a+(2n-2)d)^2 + \cdots + (a+d)^2 - a^2.\)

 

I'm not sure how to solve it but I DO know how to put it into LaTeX...

 Dec 3, 2019
 #2
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ok, no problem. do you know how I can get in touch with any of the moderators or do I just have to wait for them to see my question

 Dec 3, 2019
 #3
avatar+978 
+1

For the moderators, it's their sleeping time right now I think ... wait a few hours and the site should be more active with mods again.

CoolStuffYT  Dec 3, 2019
 #4
avatar+105989 
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"I would prefer it if the answers are not in latex. Thank you so much for helping me"

 

Why don't you want the answers in latex?

Is that becasue thez are harder to copy and past?

 

Together with your asap heading it seems you want the answer and care little for the understanding.

 Dec 3, 2019

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