Question

DIFERENCIA DE DOS CUADRADOS

1) $80 x^{2} -20 x^{2}$

2)$B x^{2} -1$

Answer 1

$80x^{2} - 20x^{2} = 20 x^{2} ( 4^{2} - 1 )=20 x^{2} ( 2^{2}+1)( 2^{2}-1)$ =  20$x^{2}([tex]( 2^{2}+1)$ [/tex] $(2+1)(2-1)$