Answers created by Juliana R.

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• How do you divide #(2x^4+12x^3-5x^2+9x+3)/(x^2-4) #?
  
• How do you multiply #(4x + 3) ( 5x - 8)#?
  
• How derivative of (1/cot(x)) = sec^2(x) ?
  
• How do you simplify #-(3)^-2#?