Answers created by Entla T.

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• How do genes control the cell cycle?
  
• How many times does the graph of y = x + 1 intersect the graph of `y = x^2 + 3`?
  
• How do you simplify `3/(x+5 )- 2/(x-3)`?
  
• How do you simplify `-x(1-x)+x(1+7x)`?