Question

9 в степени 2+5х=1,8* 5 в степени 2+5х

Answer 1

9 ^ 2 +5x = 1.8 * 5 ^ 2+5x
(9/5) ^ 2+5x = 1.8 = 9/5
2 + 5x = 1 
5x = -1
x = -0.2