Help Kaplan 800

[kwhite]

I posted this in the DS forum but i wasn't sure if anyone would see it there so ill leave this here as well if thats ok

What is the value of a - b?

1) a^2 - b^2 = 9

2) a^2 - 2ab + b^2 = 1

[Moderator Edit: Moved the post to a relevant forum - neelgandham]

I am really stumped and the book explanation isn't helping me at all. Going off of #1 a^2 - b^2 = 9 --> (a-b)(a+b)=9 Therefore:

can't we take (a-b) = 9?? or is my factoring just really off tonight??

thank you for your help.

OA = E

[sanju09]

I posted this in the DS forum but i wasn't sure if anyone would see it there so ill leave this here as well if thats ok

What is the value of a - b?

1) a^2 - b^2 = 9

2) a^2 - 2ab + b^2 = 1



I am really stumped and the book explanation isn't helping me at all. Going off of #1 a^2 - b^2 = 9 --> (a-b)(a+b)=9 Therefore:

can't we take (a-b) = 9?? or is my factoring just really off tonight??

thank you for your help.

OA = E

I am chasing, don't worry...

https://www.beatthegmat.com/help-kaplan-800-t106976.html