iwanttogotostanford
  • iwanttogotostanford
(x^2-4x+3)-(3x^2-4x-3) is equivalent to: 2x^2-6 2x^2-8x 2x^2-8x-6 -2x^2+6 -2x^2-8x
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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iwanttogotostanford
  • iwanttogotostanford
@Vocaloid
Vocaloid
  • Vocaloid
start by distributing the negative sign
iwanttogotostanford
  • iwanttogotostanford
how do i do that

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More answers

Vocaloid
  • Vocaloid
hint: -(A-B-C) = -A+B+C
iwanttogotostanford
  • iwanttogotostanford
oh ok gotcha
Vocaloid
  • Vocaloid
-(3x^2-4x-3) = ?
iwanttogotostanford
  • iwanttogotostanford
(3x^2+-4x+-3)?
Vocaloid
  • Vocaloid
almost, check your signs
iwanttogotostanford
  • iwanttogotostanford
oh, -3x^2+-4x+-3?
Vocaloid
  • Vocaloid
getting closer
Vocaloid
  • Vocaloid
-(-4x) = ? -(-3) = ?
iwanttogotostanford
  • iwanttogotostanford
4x and 3!
Vocaloid
  • Vocaloid
right, so we have - 3x^2 + 4x + 3 on the right side after we distribute now we put the whole problem back together
iwanttogotostanford
  • iwanttogotostanford
yes
Vocaloid
  • Vocaloid
x^2-4x+3- 3x^2 + 4x + 3 know where to go from here?
iwanttogotostanford
  • iwanttogotostanford
just combine right?
Vocaloid
  • Vocaloid
yes, so what does that give us?
iwanttogotostanford
  • iwanttogotostanford
x^2+14-3x^2? Im really bad at combining like terms for some reason..
iwanttogotostanford
  • iwanttogotostanford
i most likely did it wrong
Vocaloid
  • Vocaloid
not quite x^2 - 3x^2 = ?
iwanttogotostanford
  • iwanttogotostanford
3
iwanttogotostanford
  • iwanttogotostanford
so it would be x^+11?
Vocaloid
  • Vocaloid
uh, not quite hint: 1 - 3 = -2 x - 3x = -2x x^2 - 3x^2 = ?
iwanttogotostanford
  • iwanttogotostanford
just -2?
Vocaloid
  • Vocaloid
don't forget the x^2
iwanttogotostanford
  • iwanttogotostanford
-2^2???
iwanttogotostanford
  • iwanttogotostanford
im so bad at this one ...
Vocaloid
  • Vocaloid
nope, when you combine like terms, you keep the variable x^2 - 3x^2 = -2x^2
iwanttogotostanford
  • iwanttogotostanford
plus 6 right?
Vocaloid
  • Vocaloid
right
Vocaloid
  • Vocaloid
think of it this way: 1 - 3 = -2 1 dollar - 3 dollars = -2 dollars the "dollar" stays in the answer, just like x^2 stays in the answer
Vocaloid
  • Vocaloid
so our final answer is -2x^2 + 6
iwanttogotostanford
  • iwanttogotostanford
ok, im gonna need to practice that one a bit. thanks for all of you help! is it ok if i tag you in a couple of questions tomorrow?
Vocaloid
  • Vocaloid
sure, I'm online all day tomorrow
iwanttogotostanford
  • iwanttogotostanford
ok- thanks i will tag you !

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