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# Warm Up - PowerPoint PPT Presentation

Warm Up. What is a zero? What ways do you know to find a zero?. Algebra 3 Chapter 6 Polynomials and Polynomial Functions Lesson 6 Finding Rational Zeros. VOCAB. THE RATIONAL ZERO THEOREM If has integer coefficients, then every rational zero of has the following form:. TODAY.

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## PowerPoint Slideshow about ' Warm Up' - bijan

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Presentation Transcript

• What is a zero?

• What ways do you know to find a zero?

### Algebra 3Chapter 6 Polynomials and Polynomial FunctionsLesson 6Finding Rational Zeros

• THE RATIONAL ZERO THEOREM

• If has integer coefficients, then every rational zero of has the following form:

• 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

• List all possible rational zeros

• List all possible rational zeros

• List all possible rational zeros

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

• Worksheet

• 6.6B (1 – 3)

• List all possible rational zeros

### Algebra 3Chapter 6 Polynomials and Polynomial FunctionsLesson 6Finding Rational Zeros

• We will find all real zeros of a polynomial

• Find all possible zeros using RZT (yesterday)

• 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

• List all real rational zeros

### Algebra 3Chapter 6 Polynomials and Polynomial FunctionsLesson 6Finding Rational Zeros

• We will find all real zeros of a polynomial

• Type the problem into y=

• Then you can either use the table

• Or use the graph and find the zeros

I DO (Finding REAL Zeros)

• List all possible rational zeros

WE DO (Finding REAL Zeros)

• List all possible rational zeros

YOU DO (Finding REAL Zeros)

• List all possible rational zeros

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

• Worksheet

• 6.6B (10 - 16)