# a friend asked me this

• May 17th 2007, 03:04 AM
rsason
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 AM
topsquark
Quote:

Originally Posted by rsason
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

[3 - (-2)][3 +|-2|]

= [3 + 2][3 + |-2|] <-- -(-2) = 2

= [5][3 + 2] <-- |-2| = 2

= [5][5]

= 25

-Dan
• May 17th 2007, 10:11 PM
rsason
Thank you so much for a very speedy reply/assistance.:)
• May 18th 2007, 01:47 AM
OReilly
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 AM
CaptainBlack
Quote:

Originally Posted by OReilly
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

Superluminal velocities are only an optical illusions, and no information is
transfered at that speed.

RonL
• May 18th 2007, 06:21 AM
OReilly
Quote:

Originally Posted by CaptainBlack
Superluminal velocities are only an optical illusions, and no information is
transfered at that speed.

RonL

Which means that universe doesn't exist?
• May 18th 2007, 06:46 AM
topsquark
Quote:

Originally Posted by OReilly
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

Quote:

Originally Posted by CaptainBlack
Superluminal velocities are only an optical illusions, and no information is
transfered at that speed.

RonL

Well, I am made of tachyons, after all. :D

-Dan
• May 24th 2007, 02:05 PM
SwissArmelle
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 PM
CaptainBlack
Quote:

Originally Posted by topsquark
Well, I am made of tachyons, after all. :D

-Dan

Tachy

RonL
• May 25th 2007, 03:52 AM
chogo
• May 25th 2007, 04:10 AM
topsquark
Quote:

Originally Posted by chogo

The key word here being "apparent." (Though I'm still "akid" myself.)

-Dan
• May 25th 2007, 11:03 AM
ecMathGeek
Quote:

Originally Posted by topsquark
The key word here being "apparent." (Though I'm still "akid" myself.)

-Dan

"akkid"?
• May 25th 2007, 01:01 PM
topsquark
Quote:

Originally Posted by topsquark
The key word here being "apparent." (Though I'm still "akid" myself.)

-Dan

Quote:

Originally Posted by ecMathGeek
"akkid"?

"apparent" ==> "a parent"
"akid" ==> "a kid"

-Dan
• Mar 26th 2008, 08:49 AM
nikconsult
[ 3 - (-2)] [ 3 + l -2 l]

= [3+2][3+2] : Remember l -2 l = 2
= [5][5]
=25(Yes)