Réponses

2014-01-08T19:58:32+01:00
R=3(4xcarré+25-20x)
=12xcarré+75-60x
S=(4x+3)(xcarré+36+12x)
=4x exposant 3+144x+48xcarré +3xcarré+108+36x
=4x cube+51x carré+180x+108
T= je sais pas dsl
Meilleure réponse !
2014-01-08T20:00:19+01:00
R = 3(2x - 5)²
R = 3(2x² + 20x -25) 
R = 6x² + 60x - 75

S = (4x+3) (x+6)²
S = (4x +3) (x+6) (x+6) 
S = (4x² + 24x + 3x + 18) (x+6)
S = (4x² + 27x + 18) (x+6)
S = 4x³ + 24x² + 27x² + 162x +18x + 108
S = 4x³ + 51x² + 810x + 108

T = (x+5) exp 4 
T = (x+5) (x+5) (x+5) (x+5) 
T = (x² + 10x +25)(x² +10x +25)
T = x exp 4 + 10x³ + 25x² + 10x³ + 10x² + 250x + 25x² + 250x + 625
T = x exp 4 + 20x³ + 65x² + 500x + 625