Bomarie02 Bomarie02

01-10-2019
Mathematics

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Factor completely 49x^2 - 81
(7x+9)^2
(7x-9)^2
(7x+9)(7x-9)
7x-9

Respuesta :

surjithayer10otahza surjithayer10otahza

01-10-2019

Answer:

Step-by-step explanation:

[tex]x^{2} -y^{2} =(x+y)(x-y)\\49x^{2}-81=(7{x})^2-{9}^2=(7x+9)(7x-9)[/tex]

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