Решение №54

1. $$m^5 \cdot m^3 = m^{5+3} = m^8$$
2. $$x \cdot x^6 = x^{1+6} = x^7$$
3. $$a^4 \cdot a^4 = a^{4+4} = a^8$$
4. $$5^9 \cdot 5^4 = 5^{9+4} = 5^{13}$$
5. $$y^3 \cdot y^8 \cdot y^5 = y^{3+8+5} = y^{16}$$
6. $$c^7 \cdot c \cdot c^2 = c^{7+1+2} = c^{10}$$
7. $$(m-n)^8 \cdot (m-n)^3 = (m-n)^{8+3} = (m-n)^{11}$$
8. $$z^5 \cdot z \cdot z^{12} \cdot z^2 = z^{5+1+12+2} = z^{20}$$
9. $$(x-2)^4 \cdot (x-2)^9 = (x-2)^{4+9} = (x-2)^{13}$$