Simplify the expression.(1 + i)2 + (1 + i)
A. 3i.
B. 2 + 4i.
C. 1 + 3i.
D. 3 + 3i.
E. none of these
Answer: C
Mathematics
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Provide an appropriate response.Find the domain of 
when f(x) = 6x2 + 7x - 4 and g(x) = x - 9.
A. {9} B. (-?, -9) or (-9, ?) C. (-?, 9) or (9, ?) D. {-9}
Mathematics
Use the rational zero test to find all the rational zeros of f(x).f(x) = 5x4 + 4x3 - 81x2 - 64x + 16
A. Zeros: -4, 5, -1, 1/5 B. Zeros: -4, 4, -1, 1/5 C. Zeros: 4, -4, 1, -1 D. Zeros: 4, -4, 1, -1/5
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Perform the indicated matrix operations.Let A = 
and B = 
. Find 4A + B.
A. 
B. 
C. 
D. 
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Graph the circle with radius r and center (h, k).r = 3; (h, k) = (0, 0) 
A. 
B. 
C. 
D. 
Mathematics