MAILYSDESIRAT
Answered

Salut tu peut m'aider stp !
Consignes: Développer les expressions suivantes:
I = (−3 + 2x)(7 – 4x)
J = (2x + 5) (x + 1)
K = (2x – 1)(3x + 2)

Sagot :

NAIMIBATOGAMOHAMMED

Réponse:

hi

[tex]( - 3 + 2x)(7 - 4x)[/tex]

[tex] - 21 + 12x + 14x - 8x { }^{2} [/tex]

[tex] - 21 + 26 x - 8x {}^{2} [/tex]

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View image NAIMIBATOGAMOHAMMED
View image NAIMIBATOGAMOHAMMED

Bonsoir,

I = (−3 + 2x)(7 – 4x)

= -21 +12x +14x -8x²=

- 8x²  +26x  -21

J = (2x + 5) (x + 1)

= 2x² +2x +5x +5

= 2x²  +7x +5

K = (2x – 1)(3x + 2)

= 6x² +4x -3x -2

= 6x² +x -2