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K.

please be patient. my computer is very slow with attachements

Lol I know. I am just saying okay :P .

the problems.

I can't see 66 :( .

my work part 1. #67.

i just need 67-69

69 is still uploading.
answer to 67 is 272 but i got 928....

#68.
it's #67-69. I don't understand the reason for #69, but I know the answer.
I know #67 is wrong, but I don't know why, and #68 is the same concept, so I don't know if I did that right either.
Thank you!

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|dw:1355107164737:dw|

Same concept or number 68.

where'd you get the powers from?

From my first step.

ok i think i get it now.

At least that's my reasoning.

Sorry, my mistake those aren't powers.

@jennychan12 , do you get it or shall I explain more?

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no it's good.
oh, sorry. my mistake.

thanks

You are most welcome :) .