Simplify the expression, leaving your answer with only positive exponents. Assume that all variables represent positive numbers.(x5)6/5
A. x7
B. x5
C. x8
D. x6
Answer: D
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Determine the discriminant of the quadratic equation. Use the value of the discriminant to determine whether the quadratic equation has two rational solutions, two irrational solutions, one repeated real solution, or two complex solutions that are not real.4 + 5x2 = 5x
A. Two complex solutions that are not real B. Two irrational solutions C. One repeated real solution D. Two rational solutions
Explain whether the given equation defines an exponential function. Give the base for each exponential function.y = x2
A. No, there is no exponent. B. No, the base is not a constant. C. Yes, the base is 2. D. Yes, the base is x.
Express as a single logarithm and, if possible, simplify.ln (x2 - 49) - ln (x + 7)
A. ln (x - 7) B. ln (x + 7) C. ln (x2 - 7) D. ln (x - 49)
How many ways can four ties be selected from 8 ties?
A. 16 B. 1680 C. 70 D. 32