Answered

Bjr, Merci d'avance.

Développer, puis simplifier les expressions suivantes.

A = (−3) × (x + 5)
B = −4(2 + t)
C = −3(7 + 5y)
D = (−2) × (x − 8)
E = −5(3 − 2w)
F = −x(5x − 3)

Sagot :

Réponse : Hello ,

A=(−3) × (x + 5)

=(-3) × x + (-3) × 5

=(-3x) + (-15)

B= −4(2 + t)

=(-4) × 2 + (-4) × t

= (-8) + (-4t)

C=−3(7 + 5y)

= (-3) × 7 + (-3) × 5y

= (-21) + (-15y)

D= (−2) × (x − 8)

= (-2) × x - (-2) × (-8)

= (-2x) - (-16)

= (-2x) + 16

E = −5(3 − 2w)

= (-5) × 3 - (-5) × (-2w)

= (-15) - (-10w)

=(-15) + 10w

F = −x(5x − 3)

= (-x) × 5x - (-x) × (-3)

= (-5x²) - ( -3x)

=(-5x²) + 3x

Bonne continuation !!!