Developper et reduire les expressions suivantes
S= (8x - 4)² + 6x - x²
T= (7 - 3y) (7 + 3y) - 50
factoriser les expressions suivantes
A= (18z + 6) (5z - 1) + ( 5z - 1) (2 - 3z)
R= (11b + 4)² - (6 + 5b)²
M= 12 (9h + 1) - (9h + 1) (9 + 1h)
S= (8x - 4)² + 6x - x²
T= (7 - 3y) (7 + 3y) - 50
factoriser les expressions suivantes
A= (18z + 6) (5z - 1) + ( 5z - 1) (2 - 3z)
R= (11b + 4)² - (6 + 5b)²
M= 12 (9h + 1) - (9h + 1) (9 + 1h)
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Verified answer
S= (8x-4)² + 6x - x²S= 64x² - 64x + 16 + 6x - x²
S= 63x² - 58x + 16
T= (7 - 3y) (7 + 3y) - 50
T= 7² - (3y)² -50
T= -9y² + 49 - 50
T= -9y² + 1
A= (18z + 6) (5z - 1) + (5z - 1) (2 - 3z)
A= (5z - 1) [(18z + 6) + (2 - 3z)]
A= (5z - 1) (18z - 3z + 6 + 2)
A= (5z - 1) (15z + 8)
R= (11b + 4)² - (6 + 5b)²
R= [(11b + 4) - (6 + 5b)] [(11b + 4) + (6 + 5b)]
R= (11b - 5b + 4 - 6) (11b + 5b + 4 + 6)
R= (6b - 2) (16b + 10
M= 12 (9h + 1) - (9h + 1) (9h + 1)
M= (9h + 1) [12 - (9h + 1)]
M= (9h + 1) (-9h - 1 + 12)
M= (9h + 1) (-9h + 11)
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