Multiply the polynomials.(x + y + 9)2
A. x2 + y2 + 81
B. x2 + y2 + 18x + 18y + 81
C. x2 + 2xy + y2 + 18x + 18y + 81
D. x2 + 2xy + y2 + 81
Answer: C
Mathematics
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Add and simplify. If the answer is an improper fraction, write it as a mixed number.
w + 
w
A. 
w2
B. 
w
C. 
w
D. 
w2
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Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(-2, -3)} B. {(-2, 4)} C. {(-1, -1)} D. {(2, 4)}
Mathematics
Answer the question.Which number can serve as a common denominator for 
and 
?
A. 13 B. 10 C. 7 D. 42
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Solve the system by the addition method.9x - 7y = -61-3x - 2y = 16
A. {(-6, 2)} B. {(-7, 2)} C. {(-6, 1)} D. ?
Mathematics