AYUDA ES UNA PRÁCTICA
Q = ( x+5 ) ( x-5 ) - ( x+9 ) ( x-9 )
Q = ( x+5 ) ( x-5 ) - ( x+9 ) ( x-9 )
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Respuesta:
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Explicación paso a paso:
x^2 - 5^2 - (x+9) (x-9)
x^2 - 5^2 - x^2 + 9^2
x^2 + 5^2 - x^2 + 9^2
x^2 - 25 -x^2 + 9^2
x^2 - 25 - x^2 + 81
(x^2 -x^2) + (-25 + 81)
Rpta: 56