anonymous
  • anonymous
SIMPLIFY (8x+7x)(4x^3-5x^2-6x+1)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
I got this!
anonymous
  • anonymous
okay
anonymous
  • anonymous
I got this lol

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More answers

anonymous
  • anonymous
Bro....I got this!
anonymous
  • anonymous
9x(4x^3-5x^2)+1.....I believe this is it. Let me check again.
anonymous
  • anonymous
I think i got it
anonymous
  • anonymous
@BlooooooBlahBLIIIIK what did you get?
anonymous
  • anonymous
my brain?
anonymous
  • anonymous
The answer silly! :P
anonymous
  • anonymous
wait 9x(4x^3-5x^2)+1?
anonymous
  • anonymous
hold on
anonymous
  • anonymous
That's what I got...you can't combined anymore like terms.
anonymous
  • anonymous
@coffee789 What did you come up with?
anonymous
  • anonymous
Yeah
Nnesha
  • Nnesha
9x where is it come from ?
anonymous
  • anonymous
60x^4-75x^3-90x^2+15x
anonymous
  • anonymous
thas wat i got
Nnesha
  • Nnesha
@coffee789 are you sure it's (8x+7x) >???
anonymous
  • anonymous
@Nnesha thats what im trying to figure out
anonymous
  • anonymous
yes im sure
anonymous
  • anonymous
8x+7x=15x
Nnesha
  • Nnesha
alright then first combine like terms 8x+7x= ?
anonymous
  • anonymous
yea and you get 15x
anonymous
  • anonymous
wouldnt it be 15x(4x3−5x2−6x+1)
anonymous
  • anonymous
Then you subtract -6x from 15x
anonymous
  • anonymous
That's how you get 9x
Nnesha
  • Nnesha
|dw:1442333350297:dw| multiply all terms by 15xx
Nnesha
  • Nnesha
15x***
anonymous
  • anonymous
Well i got 15x(4x3−5x2−6x+1) idk
Nnesha
  • Nnesha
@coffee789 multiply all these terms 4x^3-5x^2 -6x+1 by 15x |dw:1442333445816:dw|
Nnesha
  • Nnesha
15x times 4x^3 = ??
anonymous
  • anonymous
60x4
anonymous
  • anonymous
?
Nnesha
  • Nnesha
multiply the coefficient and add exponents of variables\[\huge\rm 15x^1 ·4x^3=(15 · 4)x^{1+3}\] when we multiply same variables we should add their exponents x is same as x to the 1 power
Nnesha
  • Nnesha
plz let him solve it
anonymous
  • anonymous
Oh sorry
anonymous
  • anonymous
okay so i got 60x^4
anonymous
  • anonymous
is that right
anonymous
  • anonymous
yes
Nnesha
  • Nnesha
yeah.... right now multiply 15x by 2nd term |dw:1442333740672:dw|
Nnesha
  • Nnesha
15x times -5x^2 = ?
anonymous
  • anonymous
-75x^3
anonymous
  • anonymous
Not negative
anonymous
  • anonymous
why not
anonymous
  • anonymous
I mean yes Lol
Nnesha
  • Nnesha
that's right |dw:1442334024818:dw| now multiply 15x by -6x and then by -1
Nnesha
  • Nnesha
+1**
anonymous
  • anonymous
15x +1
Nnesha
  • Nnesha
well 15x times 1=15x but what about -6x 15x tims -6x=?
anonymous
  • anonymous
-90x
anonymous
  • anonymous
Correct
anonymous
  • anonymous
forgot the 2
anonymous
  • anonymous
−90x2
Nnesha
  • Nnesha
well nope 15x times -6x= ?? remember x is same as x^1 so add their exponents
Nnesha
  • Nnesha
when we multiply same bases we should add their exponents \[\huge\rm x^1 ·x^1 =x^{1+1}\]
anonymous
  • anonymous
oh so it's -90x^2
Nnesha
  • Nnesha
yes right
Nnesha
  • Nnesha
that's it done!
anonymous
  • anonymous
yayy
anonymous
  • anonymous
Yup
Nnesha
  • Nnesha
Yahoo!! o^_^o
anonymous
  • anonymous
thanks for all of your help
Nnesha
  • Nnesha
yw :=)

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