Multiply and simplify.
? 
A. - 
B. 
C. 
D. -12
Answer: A
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Find all the local maxima, local minima, and saddle points of the function.
A. f(-5, -10) = 2249, local maximum; f(5, 10) = -2251, local minimum
B. f(5, 10) = -2251, local minimum; f(5, -10) = 1749, saddle point; f(-5, 10) = -1751, saddle point; 
local maximum
C. f(-5, -10) = 2249, local maximum
D. f(5, -10) = 1749, saddle point; f(-5, 10) = -1751, saddle point
Use identities to fill in the blank with the appropriate trigonometric function name.
26° = tan 64°
A. cos B. tan C. csc D. cot
Perform the desired operation. Write the answer in the form a + bi.(5 + 2i)(5 - 2i)
A. 29 B. 25 - 4i C. 25 - 4i2 D. 21
In a right triangle, find the length of the side not given. Let c represent the length of the hypotenuse. Give an answer to the nearest tenth if necessary.b = 7 yd, c = 14 yd
A. a = 7 yd B. a ? 12.1 yd C. a ? 9.9 yd D. a ? 4.6 yd