Use the quadratic formula to find the exact solutions.x2 + 10x = -21
A. -7, 3
B. -3, -7
C. 3, 7
D. -3, 7
Answer: B
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Solve.The roof of a building is in the shape of the hyperbola 
where x and y are in meters. Refer to the figure and determine the height, h, of the outside walls.A = 6 m
A. 269 m B. 42 m C. 16.4 m D. 6.5 m
Find all values of ? with the given trigonometric function value.sin ? = - 
A. 225° + n ? 360°; 315° + n ? 360°, n any integer B. 45° + n ? 360°; 225° + n ? 360°, n any integer C. 135° + n ? 360°; 225° + n ? 360°, n any integer D. 45° + n ? 360°; 315° + n ? 360°, n any integer
Fill in the blank with one of the words or phrases listed below. Not all choices will be used and some choices may be used more than once.
The expression a3 - b3 is called a 
.
A. difference of two squares B. sum of two cubes C. perfect square trinomial D. difference of two cubes
Perform the indicated operation and write the answer in lowest terms. 
? 
? 
A. 
B. 
C. 
D. 