Sagot :
Réponse :
bonsoir
12 x + 15 + 8 x - 36
= 20 x - 21
5 t² - 11 t + 25 t - 55
= 5 t² + 14 t - 55
14 x² - 35 x - 2 x² + 5 x
= 12 x² - 30 x
3 y² + 3 y - 5 y - 5
= 3 y² - 2 y - 5
6 + 4 x² + 14 x - 10 x - 35
= 4 x² + 4 x - 29
6 ( 6 x - 2 x² - 3 + x )
36 x - 12 x² - 18 + 6 x
= - 12 x² + 42 x - 18
Explications étape par étape :
bonsoir,
a) 12x+15+8x-36 =20x -21
b) 5t^2-11t+25t-55 = 5t^2 + 14t - 55
c)14x-35-2x^2+5x = -2x^2 + 19x - 35
d) 3y^2+3y-5y-5 = 3y^2 - 2y - 5
e)6+4x^2+14x-10x+35 = 4x^2 + 4x + 41
f)6(6x-2x^2-3+x) = 36x -12x^2-18+6x
a) 12x+15+8x-36 =20x -21
b) 5t^2-11t+25t-55 = 5t^2 + 14t - 55
c)14x-35-2x^2+5x = -2x^2 + 19x - 35
d) 3y^2+3y-5y-5 = 3y^2 - 2y - 5
e)6+4x^2+14x-10x+35 = 4x^2 + 4x + 41
f)6(6x-2x^2-3+x) = 36x -12x^2-18+6x