Bonjour j’ai vraiment besoin d’aide Il faut développer puis réduire les expressions K(x)= (6x-3/2)(6/5x+4) L(x)= (-3x-2)(x+1)+(5+2x)(1-3x) M(x)=(-4x-1)(3-4x)-(7

[tex] Bonjour; \\\\\\ K(x)= (6x-\dfrac{3}{2})(\dfrac{6}{5}x+4) = \dfrac{36}{5}x^2 + 24x - \dfrac{9}{5}x -6 \\\\\\ = \dfrac{36}{5}x^2 + \dfrac{120}{5}x - \dfrac{9}{5}x -6 = \dfrac{36}{5}x^2 + \dfrac{111}{5}x -6 . [/tex]

[tex] L(x)= (-3x-2)(x+1)+(5+2x)(1-3x) \\\\\\ = -3x^2 - 3x - 2x - 2 + 5 - 15x + 2x - 6x^2 \\\\\\ = -9x^2 -18x + 3 . [/tex]

[tex] M(x)=(-4x-1)(3-4x)-(7x+1)(4-3x) \\\\\\ = -12x +16x^2 - 3 + 4x -28x +21x^2 - 4+3x \\\\\\ = 37x^2 - 33x - 7 . [/tex]