Question

Factorizacion: 25(x+y)^2-441(x-y)^2

Answer 1

Recuerda el siguiente producto notable

a² - b² = (a + b)(a - b)

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25(x + y)² - 441(x - y)²

[5(x + y)]² - [21(x - y)]²

[5(x + y) + 21(x - y)] [5(x + y) - 21(x - y)]

[5x+ 5y + 21x- 21y] [5x+ 5y - 21x+21y]

  [ 26x - 16y ] [26y - 16x ]

[2(13x - 8y)] [2(13y - 8x)]

 4(13x - 8y)(13y - 8x) >>>Respuesta

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eso es todo :D

SALUDOS!!