anonymous
  • anonymous
MEDAL IF YOU SOLVE!!!! Simplify the expression 5x − (3x^2 + 9x)
Mathematics
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anonymous
  • anonymous
MEDAL IF YOU SOLVE!!!! Simplify the expression 5x − (3x^2 + 9x)
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
UsukiDoll
  • UsukiDoll
1. distribute the negative on the entire right hand side of the equation 2. combine like terms and simplify
UsukiDoll
  • UsukiDoll
-(3x^2+9x) distribute the negative so what's (-1)(3x^2) and what's (-1)(9x)?

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anonymous
  • anonymous
-9x
UsukiDoll
  • UsukiDoll
true what about (-1)(3x^2) ?
anonymous
  • anonymous
-3x^2
UsukiDoll
  • UsukiDoll
yes so now we have \[5x-3x^2-9x\]
UsukiDoll
  • UsukiDoll
we just have to combine like terms I see a 5x-9x .. since both have x only they can be combinable.
anonymous
  • anonymous
it said to simplify the answers are a. -3x^2 − 4x b -3x^2 + 14x c 3x^2 − 4x d 3x2 + 14x
UsukiDoll
  • UsukiDoll
yeah we're on the right track just got to solve 5x-9x I'll factor the x out to make it easier to solve x(5-9) so what's 5-9?
UsukiDoll
  • UsukiDoll
hint: answer is going to be negative for 5-9
anonymous
  • anonymous
-4
anonymous
  • anonymous
so that means we can mark out B and D
UsukiDoll
  • UsukiDoll
yes so now we have x(-4) which is -4x -3x^2-4x
anonymous
  • anonymous
yay thanks heres medal
UsukiDoll
  • UsukiDoll
:) and here's a medal for attempting to solve the problem
anonymous
  • anonymous
yayyy my first medal!! ty

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