9 0,3α2b3 10α5b4 0,1x6 y5 (10xy²)2

9) A: $$0.3a^2b^3 \cdot 10a^5b^4 = 0.3 \cdot 10 \cdot a^{2+5}b^{3+4} = 3a^7b^7$$

B: $$0.1x^6y^5 \cdot (10xy^2)^2 = 0.1x^6y^5 \cdot 100x^2y^4 = 0.1 \cdot 100 \cdot x^{6+2}y^{5+4} = 10x^8y^9$$

Ответ: A: $$3a^7b^7$$, B: $$10x^8y^9$$