Factor completely. If the polynomial cannot be factored, say it is prime.x4 - 256
A. (x2 - 16)2
B. (x2 + 16)(x + 4)(x - 4)
C. (x2 + 16)2
D. prime
Answer: B
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Determine if the given function y = f(x) is a solution of the accompanying differential equation.Differential equation: xy' + y = 
Initial condition: y(7) = 2Solution candidate: y = 
+ 
A. No B. Yes
Solve the equation.x4 - 4x2 + 3 = 0
A. ±1, ±3
B. ±1, ±2
C. ±1, ±
D. 1, 
Compute the compound interest.$8000 is invested at 9% compounded quarterly. In how many years will the account have grown to $13,500? Round to the nearest tenth of a year.
A. 6.1 years B. 5.9 years C. 11.8 years D. 1.1 years
Determine whether the relation represents a function. If it is a function, state the domain and range.
A. function domain: {Alice, Brad, Carl} range: {cat, dog} B. function domain: {cat, dog} range: {Alice, Brad, Carl} C. not a function