2019 AMC 8 Problem 20
Attempt Problem 20 of the 2019 AMC 8 below, then check your answer against the video solution and professionally curated solution from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 2019 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
20.
How many different real numbers satisfy the equation
Answer: D
Small hint:
Let be the quantity being squared
Big hint:
Solve and
Video solution:
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Written solution:
Recall that We can do the following rearrangement.
From this we can see that there are possible values for
Thus, the correct answer is D.
Problem 20 in other years
- 1985 AMC 8
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