Réponses

2013-10-24T19:31:01+02:00
(3(2t-1))²=(6t-3)²=36t²-36t+9
(2y-1)² (y+2)=(4y²-4y+1)(y+2)=4y³+8y²-4y²-8y+y+2=4y²+4y²-7y+2
(1/2t+4)² - 4(t+1/4)²=1/4t²+4/t+16-4(t²+t/2+1/16)=1/4t²+4/t+16-4t²-2t+1/4