Solve the equation by completing the square.x2 + 5x - 5 = 0
A. 
B. -5 ± 3
C. 
D. 
Answer: D
Mathematics
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Perform the indicated operation by hand.11 + 18.286
A. -7.286 B. 29.386 C. 7.286 D. 29.286
Mathematics
Write interval notation.{x ? x ? 20.5}
A. (-?, 20.5] B. (-?, 20.5) C. [20.5, ?) D. (20.5, ?)
Mathematics
Determine the domain and the range of the function.f(x) = x2 + 10x
A. domain: all real numbers range: {y|y ? 25} B. domain: {x|x ? 5} range: {y|y ? 25} C. domain: {x|x ? -5} range: {y|y ? -25} D. domain: all real numbers range: {y|y ? -25}
Mathematics
Simplify the radical. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics