Multiply and simplify.(
+ y)(
- y)
A. 3x - y2
B. x - 2y
C. 4x
D. x + 2y
Answer: A
Mathematics
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What was the percent of increase in sales from the first to the second quarter? 
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Find the product and simplify.7x4 ? 
A. 
B. 
C. 
D. 
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Solve the problem.Find the area of the shaded region. Express the answer in terms of ?. 
A. 
? - 9 square units
B. 
?- 9 square units
C. 3?- 3 square units
D. 9 square units
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Use the Gauss-Jordan method to solve the system of equations. 3x - y + 4z = 52 -7x - 5z = -89 3y + z = 11
A. (-7, 1, 14) B. (7, 8, 1) C. (7, 1, 8) D. No solution
Mathematics