Write the sum or difference in the standard form a + bi.
- 
A. 10 + i
B. -4 + i
C. -4 - i
D. 10 - i
Answer: B
Mathematics
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Find 
by using the Chain Rule. Express your final answer in terms of t.w =x2 + xy + y2, x = e4t, y = t
A. 8e8t + (4t + 1)e4t + 2t B. 4e8t + (4t + 1)e4t + 8t C. 8e8t - 4te4t + 2t D. 4e8t + (4t + 1)e4t + 2t
Mathematics
Evaluate the sum. Round to two decimal places, if necessary.
A. 1.82 B. -5.32 C. 419.65 D. -2.32
Mathematics
Find the LCD of the given rational expressions.
; 
A. m(m + 3)(m + 3) B. m(m + 6)(m + 3) C. (m + 3)2 D. m(m + 3)2
Mathematics
Factor completely. If the polynomial cannot be factored, write "prime."8x3 - 216y3
A. 8(x - 3y)(x2 + 9y2) B. 8(x - 3y)(x2 + 3xy + 9y2) C. (8x - 3y)(x2 + 3y + 72y2) D. 8(x + 3y)(x2 - 3xy + 9y2)
Mathematics