Find the vertex of the parabola.f(x) = 2x2 - 4x - 2
A. (4, -1)
B. (-1, 4)
C. (1, -4)
D. (-4, 1)
Answer: C
Mathematics
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Write the expression in the standard form a + bi.(
+ i)5
A. 16
- 16i
B. -16
+ 16i
C. 9
+ 5i
D. 16 - 16
i
Mathematics
Use a sum or difference identity to find the exact value.sin 260° cos 20° - cos 260° sin 20°
A. 
B. - 
C. - 
D. - 
Mathematics
Find the quotient, and write in lowest terms, if necessary.- 
÷ (-3)
A. 
B. - 
C. - 
D. 
Mathematics
Let W be the subspace spanned by the u's. Write y as the sum of a vector in W and a vector orthogonal to W.y = 
, u1 = 
, u2 = 
A.
y = 
+ 
B.
y = 
+ 
C.
y = 
+ 
D.
y = 
+ 
Mathematics