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Sagot :

Réponse:

=24(x²-10x+2x-20)

=24(x²-8x-20)

=24x²-192x-480

bon journée

TEAMCE

Bonsoir,

Développer :

Double distributivité :

  • (a + b)(c + d) = ac + ad + bc + bd

Distributivité simple:

  • k(a + b) = ka + kb

24(x + 2)(x - 10)

= 24(x*x + x*(-10) + 2*x + 2*(-10))

= 24(x² - 10x + 2x - 20)

= 24(x² - 8x - 20)

= 24x² - 192x - 480

* = multiplication

Bonne soirée

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