Resposta :
[tex]A) (x-2)(x+2)= x^2-4\\B) (x-3)(x+3)= x^2-9\\C)(2x+y)(2x-y)= 4x^2-y^2\\D)(a-2b)(a+2b)= a^2-4b^2\\E)(x+1/2)(x-1/2)=x^2-1/4\\F)(2x+1/3)(2x-1/3)= 4x^2-1/9[/tex]
Espero ter ajudado!
[tex]A) (x-2)(x+2)= x^2-4\\B) (x-3)(x+3)= x^2-9\\C)(2x+y)(2x-y)= 4x^2-y^2\\D)(a-2b)(a+2b)= a^2-4b^2\\E)(x+1/2)(x-1/2)=x^2-1/4\\F)(2x+1/3)(2x-1/3)= 4x^2-1/9[/tex]
Espero ter ajudado!