Math Quiz 2

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Author:
regishouse
ID:
243101
Filename:
Math Quiz 2
Updated:
2013-10-30 23:26:28
Tags:
Math 60 Quiz
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Description:
Math 60 Quiz Two
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  1. Imaginary Unit
    • i =
    • i2=-1
  2. Complex Numbers are in the form:
    a+bi
  3. -4-
    • factor out imaginary number
    • combine like terms if any
  4. (4-2i)-(-2+5i) or (4-2i)+(-2+5i)
    add/subtract like terms
  5. (1-) + (-6+)
    • seperate - from square root 
    • find square of the positive numbers
    • attached i to squared numbers
    • combine like factors
  6. 5i(3-2i)
    • distribute 5i
    • multiply out the i2 (-1)
  7. (-6+8i)(7-2i)
    • FOIL
    • mulitply for imaginary number (i2=-1)
    • combine like terms
    • multiply by the conjugate (-7i)
    • distribute in the num, multiply in the denom
    • simplify is possible 
    • multiply by the conjugate (9-i)
    • distribute in the num.
    • FOIL in the denom.
    • multiply for i2 (-1)
    • separate answer into two fractions & simplify if possible
  8. |4-6x| = |4x-1|
    • 1) use rule |M|=|V| ⇒m±v
    • 2) write equation as
    • 4-6x=4x-1 and 4-6x=-(4x-1)
    • 3) Solve for X in each equation
  9. |4x+1| > 3
    • 1) Use rule |M|>a, M<-a or M>a
    • 2) Rewrite equation as -4x+1<-3 & -4x+1>3
    • 3) Solve for X
    • 1) Add equation within root
    • 2) Square response
    • 1) , is root is even
    • 1) Divide num and denom by root (5)
    • 2) divide remaining fraction
  10. 272/3
    1) can be figured out on calculator
  11. 20
    • 1) multiple exponents
    • 2) reduce fraction
  12. 6(32x5/6y-3)2/5
    • 1) distribute exponent outside of the ()
    • 2) multiply exponents
    • 3) create fraction with negative exponent on the bottom
    • 1) make indexes exponents
    • 2) Simplify exponents
    • 3) subtract exponents
    • 1) factor out 63
    • 2) find roots of numbers
    • 3) factor out exponents of variables
    • 1) combine factors
    • 2) multiply factors
    • 3) factor out variables
    • 4) find the roots of the variables
    • 1) Simplify large variables
    • 2) Square variables
    • 3) subtract variables

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