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Réduire les expressions suivantes :
A = 4x + 7x - 5 - 2x + 12 + 2x2
C = x2 + 8x - 7 - 8x + 14 - 2x2 + 3x
B = 2x x 3x + 4 x 5x - 4x7 + 10x - 5
D = -4 X 3x + 2x x x - 8+ 14x + 7 x2 + 4x x 5
Vous pouvais m’aider svp

Sagot :

AIRANN

A = 4x + 7x - 5 - 2x + 12 + 2 x 2

4x + 7x - 5 - 2x + 12 + 4

4x + 7x - 2x - 5 + 12 + 4

9x + 11

B = 2x x 3x + 4 x 5x - 4 x 7 + 10x - 5

6x² + 20x - 28 + 10x - 5

6x² + 30x - 33

C = 2x + 8x - 7 - 8x + 14 - 2x2 + 3x

2x + 8x - 7 - 8x + 14 - 4 + 3x

2x + 8x - 8x + 3x - 7 + 14 - 4

5x + 3

D = - 4 x 3x + 2x x x - 8 + 14x + 7 x 2 + 4x x 5

- 12x + 2x² - 8 + 14x + 14 + 20x

2x² - 12x + 14x + 20x - 8 + 14

2x² + 22x + 6

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