Multiply the binomials.(x2 - 6)(4x2 - 3)
A. 4x4 - 28x2 + 18
B. x4 - 27x2 - 27
C. 4x4 + 18x2 - 27
D. 4x4 - 27x2 + 18
Answer: D
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Verify the identity.cos(? - ?) - cos(? + ?) = 2 sin ? sin ?
What will be an ideal response?
Solve the problem.The function H described by H(x) = 2.75x + 71.48 can be used to estimate the height, in centimeters, of a woman whose humerus (the bone from the elbow to the shoulder) is x cm long. Estimate the height of a woman whose humerus is 
long.
A. 109.74 cm B. 38.72 cm C. 169.1325 cm D. 26.1725 cm
Find the vertices and the foci of the given ellipse.25x2 + 81y2 = 2025
A. V: (-81, 0), (81, 0);
F: (-9, 0), (9, 0)
B. V: (0, -9), (0, 9)
F: (0, - 2
), (0, 2
)
C. V: (0, -25), (0, 25)
F: (0, -5), (0, 5)
D. V: (-9, 0), (9, 0);
F: (- 2
, 0), (2
, 0)
Perform the indicated operations. Be sure to simplify your answer.
+ 
A. 
B. 
C. 
D. 