((3x)^9 * (9x^4)³) : ((3x³)^5 * (27x)³ * x) = 75
(3^9 * x^9 * 3^6 * x^12) : (3^5 * x^15 * 3^9 * x³ * x) = 75
(3^15 * x^21) : (3^14 * x^19) = 75
3x² = 75
x² = 25
X1 = 5 X2 = - 5
