1) $$x^2 - x^3 = (0.1)^2 - (0.1)^3 = 0.01 - 0.001 = 0.009$$
Ответ: 0.009
2) $$15a^2 = 15 \cdot (0.4)^2 = 15 \cdot 0.16 = 2.4$$
Ответ: 2.4
3) $$(x - y)^5 = (0.8 - 0.6)^5 = (0.2)^5 = 0.00032$$
Ответ: 0.00032
4) $$a^2b^3 = (0.6)^2 \cdot (0.5)^3 = 0.36 \cdot 0.125 = 0.045$$
Ответ: 0.045
5) $$(x^2 - y^2) : (x - y) = (5^2 - 3^2) : (5 - 3) = (25 - 9) : 2 = 16 : 2 = 8$$
Ответ: 8
6) $$(x^2 - y^2) : x - y = (5^2 - 3^2) : 5 - 3 = (25 - 9) : 5 - 3 = 16 : 5 - 3 = 3.2 - 3 = 0.2$$
Ответ: 0.2
7) $$x^2 - y^2 : (x - y) = 5^2 - 3^2 : (5 - 3) = 25 - 9 : 2 = 25 - 4.5 = 20.5$$
Ответ: 20.5
8) $$x^2 - y^2 : x - y = 5^2 - 3^2 : 5 - 3 = 25 - 9 : 5 - 3 = 25 - 1.8 - 3 = 20.2$$
Ответ: 20.2