Verified answer

Bonjour

Developper :

I = (2x + 1)(x - 4)

I = 2x * x + 2x * (-4) + 1 * x + 1 * (-4)

I = 2x^2 - 8x + x - 4

I = 2x^2 - 7x - 4

J = (x - 3)(3x - 2)

J = 3x^2 - 2x - 9x + 6

J = 3x^2 - 11x + 6

Verified answer

I= (2x+1)(x-4)

donc I= 2x (x-4)  + 1(x-4)

donc I=  2x² - 8x + x - 4

donc I=  2x² - 7x - 4

J=(x-3)(3x-2)

donc J=x(3x-2) - 3(3x-2)

donc J= 3x² -2x - 9x + 6

donc J= 3x² - 11x + 6