[tex]A = 4x \times 3\\A = 4 \times 3 \times x\\A = 12x\\\\B = 2 \times y+6B = 2y+6\\\\C = n+5\times n\times n\\C = n + 5n^2\\\\D = z\times 1\times z\\D = z \times z\\D = z^2\\\\E = 2s \times 7t\\E = 2 \times 7 \times s \times t\\E = 14st\\\\F = 3 \times x \times 4 \times x \times x\\F = 3 \times 4 \times x \times x \times x\\F = 12x^3[/tex]
Bonne journée !
