# Math Quiz 2

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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)
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
 Author: regishouse ID: 243101 Card Set: Math Quiz 2 Updated: 2013-10-31 03:26:28 Tags: Math 60 Quiz Folders: Description: Math 60 Quiz Two Show Answers: