Question

Descompune-ti urm. expresie 1- x la puterea 2 - 3x la puterea 2

Answer 1

E=1-$x^{2}$-3$x^{2}$
E=1-4$x^{2}$
E=(1-2x)(1+2x)

Answer 2

1 - x² -3x² =1- 4x² =(1-2x)(1+2x)