Sagot :
Bonjour
Développe puis réduis chaque expression :
L = (4t + 3)² = 16t² + 24t + 9
M = (8u - 1)² = 64u² - 16u + 1
N = 6 + (5x - 2) (3 - 4x)
N = 6 + 15x - 20x² - 6 + 8x
N = - 20x² + 15x + 8x + 6 - 6
N = - 20x² + 23x
P = 5y - (4y + 3) (- 2y - 5)
P = 5y - (- 8y² - 20y - 6y - 15)
P = 5y + 8y² + 20y + 6y + 15
P = 8y² + 31y + 15.
R = 6 (2z - 1) (3 - z)
R = 6 (6z - 2z² - 3 + z)
R = 36z - 12z²- 18 + 6z
R = - 12z² + 42z - 18.
Bonjour,
L = (4t+3) (4t+3)
= 16t² +12t + 12t + 9
= 16t² +24t +9
M= (8u -1)(8u-1)
= 64u² - 64 u -64u +1
= 64u² -128u +1
N= 6+ 15x -20x² -6 + 8x
= -20x² +23x
P=
5y -( -8y² -20y -6y -15) =
5y -( -8y² -26y -15)
= 5y +8y² +26y +15=
8y² +31y +15