Tainted
  • Tainted
Add. (x5 + 7x3 - 9) + (4x5 - 2x3 + 13) 5x5 + 5x3 + 4 4x5 - 5x3 - 4 4x5 + 9x3 + 22 5x5 + 9x3 - 22
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Tainted
  • Tainted
New to polynomials
aaronq
  • aaronq
does x5 mean x^5?
Tainted
  • Tainted
yes it does

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aaronq
  • aaronq
so ill do one (x^5 + 7x^3 - 9) + (4x^5 - 2x^3 + 13) (1)break brackets.. in this case it's easy just remove them but if you had a negative sign infront of the bracket you need to change signs for everything inside that bracket eg -(1-3+5) = -1+3-5 (2) collect like terms .. group terms so you can visualize which ones are able to be added up. Since you can only add variables (in this case, "x") together when they're raised to the same power. e.g. x^2 +x^4 + 3x^2 +x^8 x^2 + 3x^2 + x^4 +x^8 = 4x^2 + x^4 + x^8 (3) write in increasing order of power
aaronq
  • aaronq
wait i forgot to do it =(x^5 + 7x^3 - 9) + (4x^5 - 2x^3 + 13) =x^5 + 7x^3 - 9 + 4x^5 - 2x^3 + 13 = 7x^3- 2x^3+ x^5+ 4x^5 + 13 = 5x^3 + 5x^5 +13
anonymous
  • anonymous
5x5 + 5x3 + 4
aaronq
  • aaronq
haha oh yeah i missed the x-less number thanks for correcting me
anonymous
  • anonymous
x5 + 7x3 - 9 + 4x5 - 2x3 + 13 x5 +4x5 +7x3-2x3 -9+13 =5x5 + 5x3 + 4
anonymous
  • anonymous
no problem :)

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