Product.
p/n. gx887PA#B2
V3626AU
my note book doesn't play sounds
Have you panicked from XP Windows Sound Error? Is yes, then do you know why such error pops up? Well, when sound driver does not work with proper manner, then such kind of error occurs. You can Fix XP Windows Sound Error in a few instant steps. How to Fix XP Windows Sound Error 1 800 229 9186 Toll Free
Try to scan ur windows for errors , use reginout to scan for issues and fix it
Not sure what Windows version yo are running, but here are some ideas on how to troubleshoot "no sound" problems in XP.
http://www.pcauthorities.com/windows-xp/how-to-troubleshoot-sound-problems-in-windows-xp
SOURCE: COMPAQ PRESCERIO C 702 TU NOTE BOOK- NO SOUND
Before installing the audio drivers please install the UAA drivers
first. Then restart the computer and install the remaining drivers.
Carefully follow on-screen instructions, if any, during the
installation.
UAA Driver
ftp://ftp.hp.com/pub/softpaq/sp32501-33000/sp32646.exe
Audio Driver
http://ftp.hp.com/pub/softpaq/sp36001-36500/sp36090.exe
Modem Driver
http://ftp.hp.com/pub/softpaq/sp36001-36500/sp36089.exe
Wireless Lan Driver
ftp://ftp.hp.com/pub/softpaq/sp34001-34500/sp34152.exe
Synaptics Touchpad Driver
ftp://ftp.hp.com/pub/softpaq/sp35001-35500/sp35444.exe
Intel Chipset Drivers
http://downloadmirror.intel.com/13799/eng/ChipUtil.exe
Ricoh 5-in-1 Card Reader Drivers
ftp://ftp.hp.com/pub/softpaq/sp33501-34000/sp33604.exe
(a+b)2 = (a+b)(a+b) = ... ?
The result:
(a+b)2 = a2 + 2ab + b2
You can easily see why it works, in this diagram:
2. Subtract Times Subtract
And what happens if you square a binomial with a minus inside?
(a-b)2 = (a-b)(a-b) = ... ?
The result:
(a-b)2 = a2 - 2ab + b2
3. Add Times Subtract
And then there is one more special case... what if you multiply (a+b) by (a-b) ?
(a+b)(a-b) = ... ?
The result:
(a+b)(a-b) = a2 - b2
That was interesting! It ended up very simple.
And it is called the "difference of two squares" (the two squares are a2 and b2).
This illustration may help you see why it works:
a2 - b2 is equal to (a+b)(a-b)
Note: it does not matter if (a-b) comes first:
(a-b)(a+b) = a2 - b2
The Three Cases
Here are the three results we just got:
(a+b)2
= a2 + 2ab + b2
} (the "perfect square trinomials")
(a-b)2
= a2 - 2ab + b2
(a+b)(a-b)
= a2 - b2
(the "difference of squares")
Remember those patterns, they will save you time and help you solve many algebra puzzles.
Using Them
So far we have just used "a" and "b", but they could be anything.
Example: (y+1)2
We can use the (a+b)2 case where "a" is y, and "b" is 1:
(y+1)2 = (y)2 + 2(y)(1) + (1)2 = y2 + 2y + 1
Example: (3x-4)2
We can use the (a-b)2 case where "a" is 3x, and "b" is 4:
(3x-4)2 = (3x)2 - 2(3x)(4) + (4)2 = 9x2 - 24x + 16
Example: (4y+2)(4y-2)
We know that the result will be the difference of two squares, because:
(a+b)(a-b) = a2 - b2
so:
(4y+2)(4y-2) = (4y)2 - (2)2 = 16y2 - 4
Sometimes you can recognize the pattern of the answer:
Example: can you work out which binomials to multiply to get 4x2 - 9
Hmmm... is that the difference of two squares?
Yes! 4x2 is (2x)2, and 9 is (3)2, so we have:
4x2 - 9 = (2x)2 - (3)2
And that can be produced by the difference of squares formula:
(a+b)(a-b) = a2 - b2
Like this ("a" is 2x, and "b" is 3):
(2x+3)(2x-3) = (2x)2 - (3)2 = 4x2 - 9
So the answer is that you can multiply (2x+3) and (2x-3) to get 4x2 - 9
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