解:联立 4x-3y-16=0 (1)x^2/25-y^2/16=1(2) 由(1)得y=(4x-16)/3 带入(2)式得 x^2/25-[(4x-16)/3]^2/16=1所以 x^2/25-(16x^2-128x+256)/144=1所以 144x^2-400x^2+3200x-...