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a ( 4x + 6) ( 2x +3)
b ( 9x - 1) ( 4 x + 2)
c ( 3x - 4) ( 5x -7)
d 16 ( 2x - 4)
e 4x ( - 7x - 10)
Calculer A = ( 4x - 4) ( 8x - 2)
Pour x = 0
x = 2
x = - 3
a ( 4x + 6) ( 2x +3)
b ( 9x - 1) ( 4 x + 2)
c ( 3x - 4) ( 5x -7)
d 16 ( 2x - 4)
e 4x ( - 7x - 10)
Calculer A = ( 4x - 4) ( 8x - 2)
Pour x = 0
x = 2
x = - 3
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Verified answer
a)(4x + 6) (2x + 3)
= 8x² + 12x + 12x + 18
= 8x² + 24x + 18
b)
(9x - 1) (4x + 2)
= 36x² + 18x - 4x - 2
= 36x² - 14x - 2
c)
(3x - 4) (5x -7)
= 15x² - 21x - 20x + 28
= 15x² - 41x + 28
d)
16 (2x - 4)
= 32x - 64
e)
4x (- 7x - 10)
= - 28x² + 40x
Calculer A = (4x - 4) ( 8x - 2)
Pour x = 0
A = (4x - 4) (8x - 2)
A = (4 * 0 - 4) (8 * 0 - 2)
A = (0 - 4) (0 - 2)
A = 8
Pour x = 2
A = (4x - 4) (8x - 2)
A = (4 * 2 - 4) (8 * 2 - 2)
A = (8 - 4) (16 - 2)
A = (4) (14)
A = 56
Pour x = - 3
A = (4x - 4) (8x - 2)
A = (4 * - 3 - 4) (8 * - 3 - 2)
A = (- 12 - 4) (- 24 - 2)
A = (- 16) (- 26)
A = 416