گفت‌آورد نوشته اصلی از سوی homayoun نمایش پست ها
t4-2t3+2t2-2t+1=0

how can I solve this?
sorry my persian keyboard has broken out!


t4, t3, t2, t = 1, 2, 2, 1

>>> t4 - 2*t3 + 2*t2 - 2*t + 1
0