１級１次

問題１　A(x)=92x-52, B(x)=-138x^2+78x+69
問題２　1
問題３　(x, y)=(1, 2), ((-1+√3i)/2, -1-√3i), ((-1-√3i)/2, -1+√3i), (2, 1), (-1+√3i, (-1-√3i)/2), (-1-√3i, (-1+√3i)/2)
問題４　(f'''○g)(x)(g'(x))^3+3(f''○g)(x)g'(x)g''(x)+(f'○g)(x)g'''(x)
問題５　①　(x, y, z)=(1, 0, 0)　②　(x, y, z)=(s, s-1, s-1), (t, u, 1-t-u)　(s, t, uは実数)
問題６　1/2
問題７　y=x((1+2log|x|)/(1-2log|x|))