Réponse:
A:
[tex] \binom{2}{3}^{2} + 2 \times \binom{2}{3} x + {x}^{2} [/tex]
[tex] \binom{4}{9} + \binom{4}{3} x + {x}^{2} [/tex]
B:
[tex] {4}^{2} \times 2 \times 4x \times \binom{1}{4} + \binom{1}{4}^{2} [/tex]
[tex]16x + 2x - \binom{1}{16} [/tex]
[tex]18x - \binom{1}{16} [/tex]
2.
A:
[tex](2x - 4)(3x - 2 + 3x + 7)[/tex]
[tex](2x - 4)(6x + 5)[/tex]
[tex] {12x}^{2} + 10x - 24x - 20[/tex]
[tex] {12x}^{2} - 14x - 20[/tex]
3.
A:
[tex] {(2x + 5)}^{2} = {4x}^{2} + 2 \times 5 \times 2x + 25[/tex]
B :
[tex] {(2x - 6)}^{2} = {4x}^{2} - 24x + 36[/tex]
