Factor the trinomial by grouping.8a3 + 10a2b - 12ab2 - 15b3
A. (8a2 - 3b2)(a + 5b)
B. (2a2 - 3b)(4a + 5b)
C. (2a2 - 3b2)(4a + 5b)
D. (2a2 + 3b2)(4a - 5b)
Answer: C
Mathematics
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Find the rectangular-coordinate equation for the parametric equations given. x = 2cos²t, y = 2sin²t
 figure 1.png)
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Find zw or 
as specified. Leave your answer in polar form.z = 1 - iw = 1 - 
iFind 
.
A. 
(cos 15° + i sin 15°)
B. 
(cos 75° + i sin 75°)
C. 
(cos 15° + i sin 15°)
D. 
(cos 75° + i sin 75°)
Mathematics
Graph the function.y = sec 
A. 
B. 
C. 
D. 
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Plot the point given in polar coordinates.
A. 
B. 
C. 
D. 
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