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Algebra

  1. Multiplying or dividing both sides of an inequality by a negative number reverses the inequality. That is, if x > y and c < 0, then cx < cy.
  2. Transitive Property: If x < y and y < z, then x < z.
  3. Like Inequalities Can Be Added: If x < y and w < z, then x + w < y + z .
  4. Rules for exponents:
     Caution, 



    , if a > b, if b > a.
  5. There are only two rules for roots that you need to know for the test:
     
    For example, .
  6.  
    For example,.
     
    Caution: .
  7. Factoring formulas:
  8. Adding, multiplying, and dividing fractions:
     
    Example: .
     
     
    Example: .
     
     
    Example: .
  9.  
  10. Quadratic Formula:  are the solutions of the equation ax2 + bx + c = 0.




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