Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Compute r''(t).r(t) = (2 ln(8t))i + (3t3)j
A. r''(t) = 
i + 9tj
B. r''(t) = 
t-2i + 18tj
C. r''(t)= - 
t-2i + 18tj
D. r''(t) = - 
i + 18tj
Mathematics
Find the derivative of y with respect to x, t, or ?, as appropriate.y = 
A. 
B. 
C. 
D. 
Mathematics
Factor the expression completely. If the polynomial is prime, state this as your answer.16a4 + 40a2b2 + 25b4
A. (4a2 + 5b2)(4a2 - 5b2) B. (4a2 - 5b2)2 C. prime D. (4a2 + 5b2)2
Mathematics
Find the square root.
A. 2500 B. 1000 C. 500 D. 125,000
Mathematics