Respuesta :

[tex]\bf \textit{difference of squares} \\\\ (a-b)(a+b) = a^2-b^2\\\\ -------------------------------\\\\ 36x^8-49\implies 6^2x^{4\cdot 2}-7^2\implies 6^2(x^4)^2-7^2\implies (6x^4)^2-7^2 \\\\\\ (6x^4-7)(6x^4+7)[/tex]

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