(x^2-10)^2-3(x^2-10)-4=0
(x²-10)²-3(x²-10)-4=0 x⁴-20x²+100-3x²+30-4=0 x⁴-23x²-126=0 Пусть x²=t t²-23t-126=0 t₁=9 t₂=14 x²=9 x=3;-3 x²=14 x=√14;-√14 Ответ:3;-3;√14;-√14