Sagot :
Bonjour,
a= -5(x+2)
= -5*x - 5*2
= -5x - 10
b= -3(x-2)
= -3*x + 3*2
= -3x + 6
c= x(x+3)
= x*x + x*3
= x² + 3x
d= x(4-x)
= x*4 - x*x
= 4x - x²
e= -3x(x+4)
= -3x*x -3x*4
= -3x² - 12x
f=2x(x-7)
=2x*x -2x*7
=2x² -14x
g=6x(2x+1)
=6x*2x +6x*1
=12x² +6x
h= -4x(5x-10)
=-4x*5x +4x*10
=-20x² + 40x.
Réponse :
Explications étape par étape
Bonjour
Devloper, puis simplifier les expressions suivantes:
a= -5(x+2)
A = -5 * x - 5 * 2
A = -5x - 10
b= -3(x-2)
B = -3 * x - 3 * (-2)
B = -3x + 6
c= x(x+3)
C = x * x + x * 3
C = x^2 + 3x
d= x(4-x)
D = x * 4 - x * x
D = 4x - x^2
e= -3x(x+4)
E = -3x * x - 3x * 4
E = -3x^2 - 12x
f= 2x(x-7)
F = 2x * x - 2x * 7
F = 2x^2 - 14x
g= 6x(2x+1)
G = 6x * 2x + 6x * 1
G = 12x^2 + 6x
h= -4x(5x-10)
H = -4x * 5x - 4x * (-10)
H = -20x^2 + 40x