Answer:
x = 2
Explanation:
Using Pythagoras' identity in the right triangle
x² + b² = a² , that is
x² + 2² = 12²
x² + 4 = 144 ( subtract 4 from both sides )
x² = 140 ( take the square root of both sides )
x = = = 2
I don't know whether this is correct or not
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