anonymous
  • anonymous
Help with 2 questions
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
simplify the polynomial. 1. 3x^2 + 6 – 2x + 5x – 4x^2 + 9 –x^2 + 3x + 15 7x^2 + 3x + 3 x^2 – 3x + 15 –x^2 + 7x + 15 2. 2x^2 + 6x – 7x + 8 – 3x^2 + 1 2x^2 + x + 9 –2x^2 – x – 9 –x^2 – x + 9 x^2 + 9
anonymous
  • anonymous
@texaschic101
anonymous
  • anonymous
@satellite73

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More answers

mathslover
  • mathslover
Hint : Combine Like terms.
mathslover
  • mathslover
3x^2 + 6 – 2x + 5x – 4x^2 + 9 \(3x^2 - 4x^2 + 6 + 9 -2x + 5x\) Simplify it then,can yo?
anonymous
  • anonymous
@mathslover
anonymous
  • anonymous
@texaschic101
anonymous
  • anonymous
Can you help @Euler271
anonymous
  • anonymous
what mathslover is doing is the correct approach. you can add the coefficients of the x's of the same order 2x^2 + 3x -2x^2 - 2x = x
anonymous
  • anonymous
coefficients being the number in front 3x^2 - 4x^2 = (3 - 4)x^2
texaschic101
  • texaschic101
combine you x^2's....then combine your x's...then combine your numbers.....do not try and combine x^2 with x or a number with x^2.....now you try
anonymous
  • anonymous
2x+5x=7x
anonymous
  • anonymous
6+9=15
anonymous
  • anonymous
combining x^2 -x^2
anonymous
  • anonymous
so together it would be –x^2 + 7x + 15
anonymous
  • anonymous
can anybody tell me if this is correct?
anonymous
  • anonymous
then for the second question
Mertsj
  • Mertsj
-2x+5x= what?
Mertsj
  • Mertsj
if you have 5 dollars and spend 2 dollars you now have 7 dollars?????
anonymous
  • anonymous
i mean 3x
Mertsj
  • Mertsj
Then rethink your answer for number 1
anonymous
  • anonymous
–x^2 + 3x + 15
Mertsj
  • Mertsj
yes
anonymous
  • anonymous
i don't get the second one
anonymous
  • anonymous
I know it is not B
Mertsj
  • Mertsj
It is the same as the first one....add the like terms
anonymous
  • anonymous
–x^2 – x + 9?
Mertsj
  • Mertsj
yes. good job
anonymous
  • anonymous
thx!!
Mertsj
  • Mertsj
yw

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