Bonjour
Développer et réduire les expressions.
G= (x+9)²
G = x² + 18x + 81
H = (8x - 1)(5x - 7)
H = 40x² - 56x - 5x + 7
H = 40x² - 61x + 7
I = (2x + 3)(x + 1) + (5x - 3)
I = 2x² + 2x + 3x + 3 + 5x - 3
I = 2x² + 10x
J = (y - 6)(4y - 11) - (1 - 35y)
J = 4y² - 11y - 24y + 66 - 1 + 35y
J = 4y² + 65.