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MAUDMARINE

Bonjour

M = 8p - (- 6p + 12p + 5p - 10)

M = 8p + 6p - 12p - 5p + 10

M = - 3p + 10

N = 14u - 2u² - 7 + u - (4u + 4 - 7u² - 7u)

N = 14u - 2u² - 7 + u - 4u - 4 + 7u² + 7u

N = 5u² + 18u - 11.

MARGESIMPSON1

Bonsoir,

Exercice 3 : Développer puis réduire M et N :

M = 8p-(6p-5)(-p+2)

M = 8p-(-6p²+12p+5p-10)

M = 8p-(-6p²+17p-10)

M = 8p+6p²-17p+10

M = -9p+6p²+10

↳ Loi commutative.

M = 6p²-9p+10

N = (2u-1)(7-u)-(4-7u)(u+1)

N = 14u-2u²-7+u-(4-7u)(u+1)

N = 14u-2u²-7+u-(-3u+4-7u²)

N = 14u-2u²-7+u+3u-4+7u²

N = 18u-2u²-7-4+7u²

N = 18u+5u²-7-4

N = 18u+5u²-11

↳ Loi commutative.

N = 5u²+18u-11

Bonne journée.

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