k_lynn
  • k_lynn
http://prntscr.com/86551j Simplify
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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k_lynn
  • k_lynn
@kropot72
anonymous
  • anonymous
-13x^2 - 10x + 12 Would you like steps?
k_lynn
  • k_lynn
I got \[6x ^{3}-14x ^{2}+12-10x\] But I don't think that's right.

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More answers

anonymous
  • anonymous
3x^3 - 3x^3
k_lynn
  • k_lynn
@Xep can you start from the beginning?
anonymous
  • anonymous
Yes. You can rewrite the second group as -3x^3 - 6x^2 - 10 So just do 3x^3 - 3x^3 - 7x^2 - 6x^2 + 12x - 10
Nnesha
  • Nnesha
^yep bec first you should distribute 2nd parentheses by negative one
k_lynn
  • k_lynn
so the + signs that were there before are canceled out now.
k_lynn
  • k_lynn
because of distributing -1
anonymous
  • anonymous
Yes. Since you are multiplying that whole group by -1, the signs are simply reversed
k_lynn
  • k_lynn
ok.
k_lynn
  • k_lynn
I'm not sure how to combine the like terms because of the - signs.
Nnesha
  • Nnesha
what did you get after distributing by negative one ?
k_lynn
  • k_lynn
\[3x ^{3}-7x ^{2}+2-3x ^{3}-6x ^{2}-10x\]
Nnesha
  • Nnesha
yes right now just add the coefficient\[\huge\rm 3x ^{3}-7x ^{2}+2-3x ^{3}-6x ^{2}-10x\] of like terms like if like terms are -3x-4x =(-3-4)x
k_lynn
  • k_lynn
so for 3x^3 and 3x^3, when I add them together do I just have x^3?
Nnesha
  • Nnesha
no (3-3)X^3 3-3=0 WHAT do you get when you multiply anything by zero ?
k_lynn
  • k_lynn
0
Nnesha
  • Nnesha
yes so 0x^3 is just zero so that's how -3x^2 and 3x^3 cancel each other out
k_lynn
  • k_lynn
ok. So it's just kind of eliminated from the problem?
k_lynn
  • k_lynn
or cancelled from
Nnesha
  • Nnesha
yes right
k_lynn
  • k_lynn
\[-7x ^{2}+2-6x ^{2}-10x\] That's what's left right.
Nnesha
  • Nnesha
simplify there are LIKE terms combine them!
k_lynn
  • k_lynn
RIght. \[-13x ^{2}+2-10x\]
Nnesha
  • Nnesha
yep looks right ro you can write in standard form \[\huge\rm -13x^2-10x+2\]
k_lynn
  • k_lynn
Thanks so much!
Nnesha
  • Nnesha
np :)

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