Solve by completing the square.x2 + 2x = 7
A. -1 ± 
B. -1 ± 4
C. 1 + 
D. -2 ± 
Answer: A
Mathematics
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Let A = {1, 3, 5, 7}B = {5, 6, 7, 8}C = {5, 8}D = {2, 5, 8}U = {1, 2, 3, 4, 5, 6, 7, 8}.Determine whether the statement is true or false.C ? D
A. False; C is not equal to D. B. True C. False; C is equal to D. D. False; D is a subset of C.
Mathematics
Write a formula for the nth term of the arithmetic sequence. Do not use a recursion formula.4, 16, 28, 40, 52, . . .
A. an = 8n - 12 B. an = 4(12)n-1 C. an = 12n - 8 D. an = 12n - 2
Mathematics
Subtract.
A. 9075 B. 7069 C. 7075 D. 7029
Mathematics
Use the power rules to simplify the expression. Use positive exponents to write the answer.
-4
A. 
B. 
C. 
D. 
Mathematics