Factor completely. If the polynomial cannot be factored, write "prime."9y4 - 49
A. (3y2 - 7)2
B. (3y2 + 7)2
C. (9y2 + 1)(y2 - 49)
D. (3y2 + 7)(3y2 - 7)
Answer: D
Mathematics
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Find the general solution of the differential equation. Use C, C1, C2, . . . to denote arbitrary constants. If used, do not simplify hyperbolic functions.y''(t) = 40e8t + sin 5t
A. y = 
- 
+ C1t + C2
B. y = 
+ 
+ C1t + C2
C. y = 
- 
+ C1t
D. y = 
+ 
+ C1t + C2
Mathematics
Use differentiation to determine whether the integral formula is correct.
dx = (9x + 3)4 + C
A. No B. Yes
Mathematics
Perform the operation and reduce to lowest terms.12
× 5
A. 71
B. 70
C. 65
D. 60
Mathematics
Solve the formula for the specified variable.P = 
for r
A. r = P - tA
B. r = 
C. r = 
D. r = 
Mathematics