X^4+9x^2-22≥0
x²=t
t²+9t-22≥0
D=9²-4*1*(-22)=81+88=169=13²
t1=(-9+13)/2=4/2=2
t2=(-9-13)/2=-22/2=-11
(t-2)(t+11)≥0
(x²-2)(x²+11)≥0
x²≥2
x1≤-√2
x2≥√2
x∈(-∞;-√2]U[√2;+∞)
1)-5.1/1.7 *(а^k-2-2)*(b^3-k-k)*(c^k-2+k)=-3*(a^k-4)*(b^3-2k)*(c^2k-2)
2)=-4(a^k-6)*(b^8-2k)*(c^2k-3)
36p^2 - 1 = (6p)^2 - 1 = (6p-1)(6p+1) вроде так
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