Question

Radical Equations

Answer 1

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Answer 2

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Answer 3

a is correct, as it's an extension of pythagoras theorum
H^2 = a^2 + b^2
in this case :
h = d = 3.2
a = x2 - x1
b = y2 - y1

Answer 4

thanks :)

Answer 5

np dude ;)