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Sagot :

INEQUATION

Bonjour,

Calculer:

  • 3−3(−2x−4)(−3x+5)−2(−2x+3)(−2x−1)

3-3(6x²+12x-10x-20) -2(4x²-6x+2x-3)

3-3(6x²+2x-20)-2(4x²-4x-3)

3-18x²-6x+60-8x²+8x+6

-26x²+2x+69

  • (−3x+3)(−5x−5)−7(−3x+3)= 15x²-15x+15x-15+21x-21= 15x²+21x-36

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