Respuesta :

emilyaparicio16
using (a-b)(a+b)=a²- b² simplifyed is (5x)²-8² which translate to your final answer 25x² - 64

mathmate
The special product formula is
[tex](a-b)(a+b) = a^2-b^2[/tex]

Put a=5x, b=8
[tex](a-b)(a+b)[/tex]
[tex]= a^2-b^2[/tex]
[tex]=(5x-8)(5x+8)[/tex]
[tex]=(5x)^2-8^2[/tex]
[tex]=25x^2-8^2[/tex]
[tex]=25x^2-64[/tex]