5225/3000 или 1 целая 225/3000
a² - 3a + b² + 3b - 2ab = (a² - 2ab + b²) - (3a - 3b) = (a - b)² - 3(a - b) =
= (a - b)(a - b - 3);
5⁸ *9⁵
--------- = 5³=125
5⁵ *9⁵
3¹⁶ *2¹⁰ 3¹⁶ * 2¹⁰
-------- = ------------- = 3* 2⁵=3*32=96
27⁵ *2⁵ 3¹⁵ *2⁵
4⁵*9⁵ 2¹⁰ *3¹⁰
------- = ------------ = 2*3²=18
2⁹ *3⁸ 2⁹ *3⁸
2⁴ *9⁴ 2⁴ *3⁸ 3³ 27
------- = ----------- = ------= --------
4⁵ *3⁵ 2¹⁰ *3⁵ 2⁶ 64