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Sagot :

VINS

bonjour

5 ( 3 x + x ³) - 5 * x * y + 3 *x * y

=  15 x + 5 x³ -  5 xy + 3 xy

= 5 x ³ + 15 x - 2 xy

Réponse :

Rebonjour,

5(3x+x^3)-5*x*y+3*y*x = 15x + 5x^3 - 5xy + 3yx

= 15x + 5x^3 - 2xy

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