Question

Решите неравенство:
(3/7)^2x^2 < (9/49)^4

Answer 1

(3/7)^2x^2 < (9/49)^4
(3/7)^2x^2 < (3/7)^8
2x^2 > 8 
x^2 > 4 
x^2 - 4 > 0 
(x - 2)(x + 2) > 0 
x ∈ ( - ∞; - 2) ∪ (2; + ∞)