anonymous
  • anonymous
multiply the following polynomials, please help??
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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reemii
  • reemii
what will be the highest degree?
whpalmer4
  • whpalmer4
This is just the distributive property of multiplication: \[p(q+r+s) = pq + pr + ps\]
whpalmer4
  • whpalmer4
\[4a(a^2+7a+4) = 4a*a^2 + 4a*7a + 4a*4 = 4a^3 + 28a^2 + 16a\]Looks like that's correct!

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whpalmer4
  • whpalmer4
No matter how complicated the polynomials you are multiplying together, it's just a matter of applying the distributive property over and over, then adding up the pieces. Every part of the first thing has to be multiplied with every part of the second thing.
anonymous
  • anonymous
Aah, that helped me understand, thank you!
whpalmer4
  • whpalmer4
Glad to help — this is a very important concept to understand well!
whpalmer4
  • whpalmer4
Okay, the same thing: \[(2y-3)(3y-2)\]We'll split the left half up with the distributive property:\[2y(3y-2) -3(3y-2)\]Now we'll do the same thing to each half:\[2y*3y-2*2y-3*3y-3*(-2)\] Can you simplify that?
anonymous
  • anonymous
B is the answer
anonymous
  • anonymous
for the first post
anonymous
  • anonymous
Yeah @drotzmann I got it, thanks
anonymous
  • anonymous
good to hear
whpalmer4
  • whpalmer4
Let's work it out: \[2y∗3y−2∗2y−3∗3y−3∗(−2) = \]\[6y^2 -4y -9y -(-6) = 6y^2-13y+6\] That wasn't quite what you got. Do you see where you went wrong?
anonymous
  • anonymous
Ohhh, Okay, i understand now, so it is D?
anonymous
  • anonymous
((Sorry A)) Thanks so much!
whpalmer4
  • whpalmer4
I don't see the answer list any more, so I'll have to trust that you picked the right one! :-)

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