cjenco02 cjenco02
  • 21-08-2018
  • Mathematics
contestada

How do I solve this?

How do I solve this class=

Respuesta :

choixongdong
choixongdong choixongdong
  • 21-08-2018

a^2 - b^2 = (a + b)(a - b)

In this case

49x^4y^2 - 4z^2

= (7x^2y)^2 - (2z)^2

= (7x^2y + 2z)(7x^2y - 2z)

Factors are (7x^2y + 2z) and (7x^2y - 2z)

Answer:

D) 7x^2y + 2z

Answer Link

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