Simplify the expression and write the answer without negative exponents.
A. - 
B. - 
C. 
D. 
Answer: D
Mathematics
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Factor, if possible.u2 - 2uv - 63v2
A. (u - 7v)(u + 9v) B. (u - v)(u + 9v) C. (u + 7v)(u - 9v) D. (u - 7v)(u + v)
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Use Cramer's Rule (if applicable) to solve the system of equations.
A. {(-2, 2)} B. {(1, 2)} C. {(-1, 1)} D. ?
Mathematics
Find the general solution for the differential equation.
+ 2xy = 21x
A. y = 
+ Cex2
B. y = 
+ Ce-x2
C. y = 21 + Cex2
D. y = 
+ 2x + Ce-x2
Mathematics