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Sagot :

MITCHALEXANDRINE2314

3x(2x-7)

=(3X×2X) - (3X×7)

=6X^2-21 X

-8(3-4x)

-(8×3)+(8×4X)

=-24+32X

5x^2(3-2x)

=(5X^2×3)-(5X^2×2X)

=15X^2-10X^3

VINS

[tex]bonjour\\\\3 x ( 2 x - 7 ) = 6 x^{2} - 21 x\\\\- 8 ( 3 - 4 x ) = - 24 + 32 x \\\\5 x^{2} ( 3 - 2 x ) = 15 x^{2} - 10 x^{3\\} \\[/tex]

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