hello, a friend asked me this and I don't know if my answer is correct. the prob is [ 3 - (-2)] [ 3 + l -2 l] and answer is 25. pls tell me if I'm way wrong or not. :o

Printable View

- May 17th 2007, 03:04 AMrsasona friend asked me this
hello, a friend asked me this and I don't know if my answer is correct. the prob is [ 3 - (-2)] [ 3 + l -2 l] and answer is 25. pls tell me if I'm way wrong or not. :o

- May 17th 2007, 03:19 AMtopsquark
- May 17th 2007, 10:11 PMrsasonre: a friend asked....
Thank you so much for a very speedy reply/assistance.:)

- May 18th 2007, 01:47 AMOReilly
Topsquark is a Physics Maestro which means that he is Master of light which means that he can post replies faster than a speed of light!:D

- May 18th 2007, 05:29 AMCaptainBlack
- May 18th 2007, 06:21 AMOReilly
- May 18th 2007, 06:46 AMtopsquark
- May 24th 2007, 02:05 PMSwissArmelle
You're right. The two negatives multiplied together make a positive, and the absolute value makes the -2 a positive also.

- May 24th 2007, 08:25 PMCaptainBlack
- May 25th 2007, 03:52 AMchogo
- May 25th 2007, 04:10 AMtopsquark
- May 25th 2007, 11:03 AMecMathGeek
- May 25th 2007, 01:01 PMtopsquark
- Mar 26th 2008, 08:49 AMnikconsult
[ 3 - (-2)] [ 3 + l -2 l]

= [3+2][3+2] : Remember l -2 l = 2

= [5][5]

=25(Yes)