=(5^4*(2/10)^-2):125^2=5^4*(10/2)^2:125^2=5^4*25:125^2=5^4*5^2:(5^3)^2=5^6:5^6=1
Х ровно десять будет [-10] или [10 ]
х-0.3 [-0.3] [0.3]
x- (-2.7) [-2.7] [2.7]
x- (-9) [-9] [9 ]
0,4*корень из 2=0.56568542494
(a^m)^n=a^(m*n)
a^m / a^n=a^(m-n)
1)(a^2)^4*(a^3)^5:(a^3)^7=a^8*a^15 / a^21=a^23 / a^21=a^2
2)(x^3)^6*(x^2)^5=x^18*x^10=x^28