Solve the equation by completing the square. Express any complex numbers using i notation.x2 + 8 = -x
A. x = 
B. x = 
C. x = 
D. x = 
Answer: A
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Simplify. Assume that any variables are positive.-
A. - 
B. - 
C. - 
D. - 
Use matrix inversion to solve the system of linear equations.
Fill in the blank(s) with the appropriate word(s).
Use the Principle of Mathematical Induction to show that the statement is true for all natural numbers n.1 ? 1 + 2 ? 1 + 3 ? 1 + . . . + n = 
What will be an ideal response?
Solve the problem.In the formula N = Iekt, N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. How long will it take for the population of a certain country to triple if its annual growth rate is 2.7%? Round to the nearest year.
A. 111 yr B. 1 yr C. 41 yr D. 18 yr