Simplify by factoring. Assume that any variable in a radicand represents a positive real number.
A. 10xy
B. 10x4y4
C. x4y4
D. 10x4y4
Answer: B
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Find the exact value under the given conditions.cos ? = - 
, 
< ? < ?; sin ? = 
, 
< ? < ? Find tan(? - ?).
A. 
B. - 
C. 
D. - 
Without graphing, answer the following questions for the linear system.(i) Is the system inconsistent, are the equations dependent, or neither?(ii) Is the graph a pair of intersecting lines, a pair of parallel lines, or one line?(iii) Does the system have one solution, no solution, or an infinite number of solutions?x + 2y = 0y = - 
x
A. (i) dependent (ii) one line (iii) infinite number of solutions B. (i) neither (ii) intersecting lines (iii) one solution C. (i) inconsistent (ii) parallel lines (iii) no solution
Multiply. Assume that all variables represent non-negative real numbers.
(
+ 
)
A. 2
+ 4
B. 14 + 4
C. 2
+ 2
D. 4
+ 2
Find the sum, if it exists.-15 - 
- 
- 
- . . .
A. 
B. - 5
C. - 20
D. Does not exist