Mathematics
18 Online
OpenStudy (anonymous):
Factor each polynomial.
1. 4y2 + 8
2. y2 - 4
3. x2 - 14x - 15
4. 4x2 - 3x + 20x - 15.
5. x2y3 + xy
6. 3x3 + 6x2 – 24x.
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OpenStudy (anonymous):
@misty1212
OpenStudy (misty1212):
HI!
OpenStudy (misty1212):
which one would you like to factor?
OpenStudy (anonymous):
Hey girl!
OpenStudy (misty1212):
hey \(\color\magenta\heartsuit\)\(\color\magenta\heartsuit\)
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OpenStudy (misty1212):
want to do \(4y^2 + 8\) first ?
OpenStudy (anonymous):
yess
OpenStudy (misty1212):
k you see a common factor in \(4y^2\) and \(8\) ? it is just a number common to both
OpenStudy (anonymous):
they both dont have a same number? lol sorry im confused
OpenStudy (misty1212):
i know they don't' one has a 4 the other has an 8
you know a way to factor 8?
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OpenStudy (misty1212):
guess not
they have a common factor of 4 since \(8=4\times 2\)so you can "factor it out" and you get
\[4y^2+8=4(y^2+2)\]
OpenStudy (anonymous):
im sorry i was on other page of school lol and yes 8 okay cool
OpenStudy (jhannybean):
That's quite a lot of questions. Lol.
OpenStudy (misty1212):
HI @Jhannybean please step in and help
i have to get up early !!
OpenStudy (jhannybean):
Me too!! What class do you have tomorrow?
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OpenStudy (anonymous):
i know:( lol
OpenStudy (misty1212):
no math just stuff
you?
OpenStudy (jhannybean):
Chem, haha. Oh boy :)
OpenStudy (jhannybean):
But yeah... are you done with #1 @brittney_IDKM ?
OpenStudy (misty1212):
good luck
good night too `
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OpenStudy (anonymous):
yes
OpenStudy (jhannybean):
Alright, #2.
OpenStudy (anonymous):
is number 2 (x+2 )(y-2)?
OpenStudy (jhannybean):
\[y^2-4 \implies (y)^2 -(2)^2\]This is a difference of squares that follows the format \(a^2-b^2 = (a-b)(a+b)\)
OpenStudy (jhannybean):
And youg ot it \(\checkmark\)
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OpenStudy (jhannybean):
#3. \(x^2 - 14x - 15\)
Find two numbers that add to give you -14, and multiply to give you -15.What would those be?
OpenStudy (anonymous):
#3 is -12-x2-14x right?
OpenStudy (jhannybean):
Not quit. Did you find the factors of -14 and -15?
OpenStudy (jhannybean):
hint: -15 plus what will give you -14?