1) log2(3-2x)=2 2) lg^2 x+lgx-2=0 решите пожалуйста
1) 2^2 = 3-2x 4-3=-2x 1=-2x x = -1/2 2) lgx = t t^2 + t - 2 = 0 d = 1+8 = 9 t1 = (-1+3)/2 = 1 t2 = (-1-3)/2 = -2 lgx = t1 = 1 lgx = t2 = -2 10 = x 10 = x^(-2) 10 = 1/ x^2 10x^2 = 1 x^2 = 1/10 x = √1/10 х≠0 ответ: х=10, x = √1/10, х≠0