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Interrogation entraînement CALCUL LITTÉRAL
Développer, réduire et ordonner les expressions suivantes.
A = 7(x + y)
B = 5(x - 2)
C = 8(2-y)
E = 3(x + 2) + 4x
G= 3x +4- (x + 2)
I= 6x(x + 7) + 5x(x-3)
D=2(x+3)
F = 3(y + 4) + 2(y - 1)
H = 4(x - 1) - 2(x+3)
J = 4(3x) - x(x - 5) aider moi au plus vite sil vous plait c pour demain svppp

Sagot :

HIRONDELLE52

Bonjour,

A = 7(x + y)

= 7x+7y

B = 5(x - 2)

= 5x-10

C = 8(2-y)

= 16 -8y

E = 3(x + 2) + 4x

= 3x +6 +4x

= 7x +6

G= 3x +4- (x + 2)

= 3x +4 -x-2

= 2x +2

I= 6x(x + 7) + 5x(x-3)

= 6x² +42 +5x² -15

= 11x² +27

D=2(x+3)

= 2x +6

F = 3(y + 4) + 2(y - 1)

= 3y +12 +2y -2

= 5y +10

H = 4(x - 1) - 2(x+3)

= 4x -4 -2x -6

= 2x-10

J = 4(3x) - x(x - 5)

= 12x -x² +5x

= -x²  +17x