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c² = a² + b²
Reemplazando datos:
( 10 )² = ( 2 )² + ( x + 2 )²
Despejando "x*:
100 = 4 + ( x + 2 )²
( x + 2 )² = 100 - 4 = 96
x + 2 = √( 96 )
x = √( 96 ) - 2
x = 7.8
Comprobación:
( 10 )² = ( 2 )² + ( x + 2 )²
100 = 4 + ( ( 7.8 ) + 2 )²
100 = 4 + 96
100 = 100
Espero haberte ayudado, saludos!