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Sagot :

SKABETIX

Bonjour,

2x - 3 = 7 + 4x

4x - 2x = -3 -7

2x = -10

x = -10/2

x = -5

4(x + 3) = -x

4x + 12 = -x

4x + x + 12 = 0

5x = 12

→ tu termines

(3x - 5)(2x + 3) = 0

3x - 5 = 0 ou 2x + 3 = 0

3x = 5 ou 2x = -3

→ tu termines

x² = 27

x = √27 ou x = -√27

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