Find z1z2. Express the answer in standard form.z1 = 4(cos 225° + i sin 225°)z2 = 6(cos 225° + i sin 225°)
A. -24
B. 24
C. 24i
D. -24i
Answer: C
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Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.(
+ 
)(
- 
)
A. 2
B. 8
C. 5 - 2
D. 5 - 2
Decide whether the relation is a function, and give the domain and range.
A. Function; domain: (-?, 0) ? (0, ?); range: (-?, ?) B. Not a function; domain: (-?, ?); range: (-?, ?) C. Not a function; domain: (-?, 0) ? (0, ?); range: (-?, ?) D. Function; domain: (-?, ?); range: (-?, ?)
Determine the possible number of positive real zeros and negative real zeros of the polynomial function using Descartes' rule of signs.f(x) = -4x7 - 9x6 - 4.5x5 + 3x4 + x + 18
A. 1 positive zero, 4 or 2 negative zeros B. 1 positive zero, 3 or 1 negative zeros C. 1 positive zero, 4, 3 or 1 negative zeros D. 1 positive zero, 2 or 0 negative zeros
Express the inverse of the given statement symbolically.Add 6 to x then multiply the result by -12.
A. - 
B. 
- 6
C. 6(x - 12)
D. -12(x + 6)