5 (10c6y3)2 (4cy2)2 (−10x5)² · (−5x4)²

5) A: $$(10c^6y^3)^2 \cdot (4cy^2)^2 = 100c^{12}y^6 \cdot 16c^2y^4 = 1600c^{12+2}y^{6+4} = 1600c^{14}y^{10}$$

B: $$(-10x^5)^2 \cdot (-5x^4)^2 = 100x^{10} \cdot 25x^8 = 2500x^{10+8} = 2500x^{18}$$

Ответ: A: $$1600c^{14}y^{10}$$, B: $$2500x^{18}$$