Use the quadratic formula to solve the equation.x(x + 4) = 8
A. {-2 ± 2i}
B. {-2 ± 2
}
C. {2 ± 2
}
D. {2 ± 2i}
Answer: B
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Find the product of the complex number and its conjugate.6 + 
i
A. 42 B. 30 C. 72 D. 36 + 6i
Simplify the exponential expression.x6 ? x-2
A. 
B. x4
C. - 
D. -x4
Give the equation of the function whose graph is described.The graph of y = x2 is shifted 4 units to the left. This graph is then vertically stretched by a factor of 5 and reflected across the x-axis. Finally, the graph is shifted 8 units downward.
A. y = -5(x + 4)2 - 8 B. y = -5(x - 4)2 - 8 C. y = -5(x + 8)2 - 4 D. y = -5(x - 4)2 + 8
Provide an appropriate response.What is the difference between the information provided by a secant line and the information provided by a tangent line?
A. The slope of a secant line is the instantaneous rate of change of a function at a point, whereas the slope of a tangent line is the average rate of change of a function over an interval. B. The slope of a secant line drawn for a function f(x) is the average value of f(x) over an interval, whereas the slope of a tangent line is the instantaneous value of f(x) at a point. C. The slope of a secant line is the average rate of change of a function over an interval, whereas the slope of a tangent line is the instantaneous rate of change of a function at a point. D. A secant line touches the graph of a function just once, but a tangent line generally touches the curve twice.