Find each product. Write the result in the form a + bi.(3 + 9i)(3 - 8i)
A. -72i2 + 3i + 9
B. -63 + 51i
C. 81 - 3i
D. 81 + 3i
Answer: D
Mathematics
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Find the zeros of the function. Give exact answers.f(x) = 5x2 - x + 3
A. - 
, 
B. 
± 
i
C. 1 ± 
D. 
± 
i
Mathematics
Use implicit differentiation to find dy/dx and d2y/dx2.x2 + y2 = 7
A. 
= - 
; 
= - 
B. 
= 
; 
= 
C. 
= - 
; 
= - 
D. 
= - 
; 
= - 
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Provide an appropriate response.Why is absolute value always non-negative?
What will be an ideal response?
Mathematics
Divide.
A. 2.875 B. 1.875 C. 0.533 D. 18.75
Mathematics