Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.(16x8y4)1/2
A. 4x4y
B. 4x4y2
C. 4x8y2
D. x4y2
Answer: B
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Provide an appropriate response. What is an extraneous root? When must a solution be checked to determine if it is an extraneous root?
What will be an ideal response?
A woman walks due west on the deck of a ship at 6 mi/h. The ship is moving north at a speed of 21 mi/h. Find the speed of the woman relative to the surface of the water. Round the result to the nearest tenth.
What will be an ideal response?
The graph of a function f is given. Use the graph to answer the question.What are the x-intercepts?
A. (-12, 0), (14, 0) B. (-12, 0), (14, 0), (20, 0) C. (-20, 0), (-12, 0), (14, 0), (20, 0) D. (-12, 0)
Factor completely. If the polynomial cannot be factored, say it is prime.x4 - 3x2 - 28
A. (x2 + 7)(x2 + 4) B. (x2 + 7)(x2 + 1) C. (x2 - 7)(x2 + 4) D. Prime