Réponse:
E
[tex] = 25x {}^{2} - 16 = 5 \times 5 \times x \times x - 4 \times 4 = (5x - 4)(5x + 4)[/tex]
G
[tex] = (3x - 2) {}^{2} - (7x) {}^{2} [/tex]
H
[tex] = 3 {}^{2} - (x + 1) {}^{2} [/tex]
