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Sagot :

Bonjour,

105/35+  140x/35 + 60x /15 + 30x²/15 +120/15 + 60x /15

= 30x²/15    140x/35 + 120x/15  +105/35 + 120/15

= 2x²   +4x    + 8x + 3 + 8

= 2x²  +12x + 11

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