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Sagot :

TEAMCE

Bonjour,

Développer et réduire :

Distributivité simple:

  • k(a + b) = ka + kb

A = 7*(x + 3)

A = 7*x + 7*3

A = 7x + 21

✅

B = 5*(x - 4)

B = 5*x + 5*(-4)

B = 5x - 20

✅

* = multiplication

Bonne journée

A = 7 x (X+ 3)

A = 7 x X + 7 x 3

A = 7X + 21

B = 5 x (X - 4)

B = 5 x X + 5 x (-4)

B = 5X - 20

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