anonymous
  • anonymous
Is there a faster the way to solve polynomials then to use the long division method? If yes, how do you do it?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Factorize
Hero
  • Hero
Synthetic Division
anonymous
  • anonymous
can you please show me how to do synthetic division? @Hero

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anonymous
  • anonymous
Factor by inspection. For example, say we had x^3 + 6x^2 + 11x +6. You could spot that (x+1) is a factor (substitute x=-1 to see this) and then write the semi-factorised verision by inspection: (x+1)(x^2+5x+6) And continue reducing and taking factors out until you get to (x+1)(x+2)(x+3). It's a bit odd to describe the method, but I'll explain the first step: I took out (x+1). We have x^3 so I know the first term in the second set of bracekets will have to be x^2. When this is multiplied by x+1 we get the x^3, but only get x^2 when we need 6x^2. So the next term in the second set of brackets will be 5x (since it will multiply with the x from the first set of brackets to give a total of 6x^2). So up till now we have (x+1)(x^2+5x+...). The 5x completed the x^2 terms, but only gives us 5x, when we need 11x. So our next term will be +6, to give the extra 6x and the +6. So at the end of this step we have (x+1)(x^2+5x+6). You can then factorise x^2+5x+6 easily. It seems long winded in the explanation but it really isn't, it's basically just shorthand long division. Please let me know if I can make something more clear.

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