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Turtles8276
11.11.2019 •
Mathematics
(challenge) find x?
![\left(2 + \sqrt{3} \right)^x + \left( 2 - \sqrt{3} \right)^x = 14 \\](/tex.php?f= \left(2 + \sqrt{3} \right)^x + \left( 2 - \sqrt{3} \right)^x = 14 \\)
![x = 2](/tex.php?f=x = 2 )
from: mr. zibi@davidjr
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Ответ:
a squared + b squared = c squared
a and b represent the sides of the triangle (aka the length of a side of the square), and c represents the hypotenuse (aka the diagonal).
9 squared + 9 squared = c squared
81 + 81 = c squared
162 = c squared
take the square root of both sides
81= x