👤

Sagot :

Bonjour ,

1)

g(x) = 4x² - 9 = (2x)² - (3)² = (2x-3)(2x+3)

2)

g(x) = 0

4x² - 9 = 0

(2x-3)(2x+3)=0

2x-3 = 0 ou 2x+3 = 0

x = 3/2 ou x = -3/2

3)

x. | - ∞ -3/2. 3/2. + ∞

2x-3. | - -. 0. +

2x + 3. | -. 0. + +

(2x-3)(2x+3) | + 0 - 0 +

© 2024 IDNLearn. All rights reserved.