Answer:
6
Step-by-step explanation:
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20² = (8 + 8)² + x²
x = 12
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the missing side has a value of 12, found using pythagorean theorem
Answer:
See Explanation
Step-by-step explanation:
You are doing simple math within the square root. For instance where x=-2 you substitute -2 for x then add 2 which gives you 0 leaving you with -6.
for x=2 you end up with "square root 2+2" which gives you 4 and the square root of 4 is 2 so you add -6 to 2 giving you the answer of -4.
The answer is C, because 2 shapes can have the same area, but that doesn't necessarily mean they're congruent.