bjr
comme (a+b)² = a² + 2ab + b²
on aura
= (-6)² + 2*(-6)*10 + (10x)²
= 36 - 120x + 100x²
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bjr
comme (a+b)² = a² + 2ab + b²
on aura
= (-6)² + 2*(-6)*10 + (10x)²
= 36 - 120x + 100x²