Algebra II, Chapter 5 Section 5



Algebra II, Chapter 5 Section 5.6: Radical Expressions

1. Finding the _____________ ____________ and ___________ a number are inverses of each other.

2. Index of a radical:

3. Radicand:

4. Can you take the square root of a negative number:

5. Can you take the cube root of a negative number:

Fill in the Chart of Roots and Powers

|Root n |[pic] |[pic] |[pic] |[pic] |[pic] |

|1 |1 |1 | | | |

|2 |4 |8 |16 | | |

|3 |9 | | | | |

|4 | | | | | |

|5 | | | | | |

|6 | | | | | |

|7 | | | | | |

|8 | | | | | |

|9 | | | | | |

|10 | | | | | |

|11 | | | | | |

|12 | | | | | |

|13 | | | | | |

|14 | | | | | |

|15 | | | | | |

Section 5.9: Complex Numbers

Can you take the square root of a negative number?

What do we call even roots with negative radicands?

What letter represents even roots with negative radicands?

i = R =

[pic] = R =

[pic]= R =

[pic] = R =

Complex numbers are in the form:

Who discovered the imaginary plane?

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