Write the expression in the standard form a + bi.(1 + i)3
A. 2 + 2i
B. -2 + 2i
C. -2 - 2i
D. -2 + i
Answer: B
Mathematics
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Find 
and 
.f(x, y) = sin2 (6xy2 - y)
A. 
= 12y2sin (6xy2 - y) cos (6xy2 - y); 
= 2sin (6xy2 - y) cos (6xy2 - y)
B. 
= 2sin (6xy2 - y) cos (6xy2 - y); 
= (24x - 2) sin (6xy2 - y) cos (6xy2 - y)
C. 
= 2sin (6xy2 - y) cos (6xy2 - y); 
= 2sin(6xy2 - y) cos(6xy2 - y)
D. 
= 12y2sin (6xy2 - y) cos (6xy2 - y); 
= (24xy - 2) sin (6xy2 - y) cos (6xy2 - y)
Mathematics
Solve the inequality, and graph the solution set.4x2 - 28x + 44 ? 0
A. 
B. 
? 
C. 
D. 
? 
Mathematics
Insert a decimal point in the product.1880 × 0.054 = 101520
A. 101.520 B. 10.1520 C. 101,520. D. 1015.20
Mathematics
Solve the equation after making an appropriate substitution.x4 - 50x2 + 49 = 0
A. {-50, 50} B. {-7, 7} C. {-49, 49} D. {-7, -1, 1, 7}
Mathematics