anonymous
  • anonymous
Please help. The problem is: Use long division to divide (x^4-2x^2-1) divided by (X^2-3x-2)
Mathematics
katieb
  • katieb
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amistre64
  • amistre64
do you remember how to do long division with numbers?
anonymous
  • anonymous
yes
anonymous
  • anonymous
My computer is freezing. I will have to reboot. Be right back

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amistre64
  • amistre64
exact same thing then.... x^2 +3x +11 ------------------ x^2 -3x -2 | x^4 -2x^2 -1 -x^4 +3x^3 +2x^2 ------------------- +3x^3 +2x^2 -1 -3x^3 +9x^2 +6x ------------------ 11x^2 +6x -1 -11x^2 +33x +22 ------------------ 39x +21 ^^^^^^ our remainder 39x +21 x^2 +3x +11 + ----------- if I kept me wits about me :) x^2 -3x -2
amistre64
  • amistre64
i missed it lol.... easier to keep track of on paper
anonymous
  • anonymous
Indeed; close, but no cigar.
amistre64
  • amistre64
that first (-2x^2 + 2x^2) got out of my sight....
amistre64
  • amistre64
copy paste then edit eh....
amistre64
  • amistre64
exact same thing then.... x^2 +3x +9 ------------------ x^2 -3x -2 | x^4 -2x^2 -1 -x^4 +3x^3 +2x^2 ------------------- +3x^3 -1 -3x^3 +9x^2 +6x ------------------ 9x^2 +6x -1 -9x^2 +27x +18 ------------------ 33x +17 ^^^^^^ our remainder 33x +17 x^2 +3x +9 + ----------- if I kept me wits about me :) x^2 -3x -2
amistre64
  • amistre64
I was to busy making sure I flipped my signs to notice it the first time :)
anonymous
  • anonymous
Oh dear. Don't worry, long division is gay, anyway.
amistre64
  • amistre64
I got a notebook full of long square rootings I did years ago...

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