Question

Решите уравнение;
 1. (3x + 7)^2 * (3x - 7) - 9(3x -7) = 0
2. (x^2 + 4x)^2 * (x^2 + 4x - 17) + 60 = 0

Answer 1

(3x+7)2−(3x−7)2​=x(3x+7−(3x−7))⋅(3x+7+3x−7)​==x14⋅6x​=84​