4.
1) 2x- 1 = 7² = 49
x = 50/2 = 25 - ОТВЕТ
2) 0,1*x - 1.4 = 3² = 9
0.1*x = 10.4
x = 104 - ОТВЕТ
3) 43 - 2x = 11² = 121
2x = -78
x = - 39 - ОТВЕТ
4) 10x -8.3 = 4² = 16
10x = 24.3
x = 2.43 - ОТВЕТ
5,
1) = 11*4² =11*16 = 176
2) =3⁶/2⁶ = (3/2)⁶
3) = 3⁽⁹⁺¹²⁻⁴⁻⁶⁻⁸⁾ = 3¹=3
4) = 5⁽⁶⁺³⁺¹⁰⁻¹⁴⁻³⁾ = 5² = 25