hoaam139 > 05-26-2011, 03:38 AM
phuoc_tntk > 05-26-2011, 07:48 AM
108lsb > 06-02-2011, 01:10 AM
phuoc_tntk Đã viết:x=0, giai lam gi cho met
hoaam139 Đã viết:5^2x - 7^x -35.5^2x + 36.7^x = 0