Answer:
=> x = 2.4
Explanation:
By using PGT
=> (5+x)² = 7²+x²
=> 5² +x² +2(5)(x) = 49+x²
=> 25 + x² + 10x = 49 +x²
=> 10x = 49-25
=> 10x = 24
=> x = 24/10
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