 What is a zero?  What ways do you know to find a zero?

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Presentation transcript:

 What is a zero?  What ways do you know to find a zero?

 Use the rational zero theorem to find all possible zeros

 WRITE THE PROBLEM IN STANDARD FORM  DOESN’T need missing terms  Look at the constant  Factor it  Look at the leading coefficient  Factor it  LIST ALL COMBINATIONS  All answers have a plus/minus

 Today we learned how to find all possible zeros using the rational zero theorem

 Worksheet  6.6B (1 – 3)

 We will find all real zeros of a polynomial

 Find all possible zeros using RZT (yesterday)  Plug your answers into synthetic division  If your remainder is zero then it’s a REAL zero  If your remainder isn’t then it is NOT a real zero  Once you find an answer remember to take the opposite for the equation  Example -2 means I write x + 2  Example 3/4 means I write 4x - 3

 Find all possible zeros using RZT (yesterday)  Plug your answers into the equation using direct substitution for the x  Once you find an answer that equals zero remember to take the opposite for the equation  Example -2 means I write x + 2  Example 3/4 means I write 4x - 3

 We will find all real zeros of a polynomial

 In your calculator  Type the problem into y=  Then you can either use the table  Or use the graph and find the zeros

 Today we learned how to find all REAL zeros of a polynomial

 Worksheet  6.6B ( )