Question

encontre o valor dos x's.
E explique.
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Answer 1

x √2 = a

a ² = (14+9) ² + 7 ²

a ² = 23 ² + 7 ²

a ² = 529 + 49

a ² = 578

a = √578

...

x √2 = √578

x = √289

x = 17