Demostrar identidades - verifique la identidad.

[img]data:image/png;base64,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[/img]  Por enunciado.[br][br][img]data:image/png;base64,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[/img]  Multiplicando el mismo factor en numerador y denominador a la izquierda.[br][br][img]data:image/png;base64,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[/img]   Suma por la diferencia de dos cantidades - diferencia de sus cuadrados.[br][br][img]data:image/png;base64,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[/img]   Por identidad pitagórica.[br][br][img]data:image/png;base64,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[/img]    Simplificando nos da el valor del lado derecho.
Demostración gráfica: como podemos observar, la gráficas correspondientes a los dos lados coinciden.

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