No 1 A (ab)² (-5a4b5) (-5a4b5) B -6x7y5x3 - 6x7 y. 5x3 y². 2xy²

1) A: $$(ab)^2 \cdot (-5a^4b^5)$$
$$= a^2b^2 \cdot (-5a^4b^5) = -5a^{2+4}b^{2+5} = -5a^6b^7$$

B: $$-6x^7y \cdot 5x^3y^2 \cdot 2xy^2$$
$$= -6 \cdot 5 \cdot 2 \cdot x^{7+3+1}y^{1+2+2} = -60x^{11}y^5$$

Ответ: A: $$-5a^6b^7$$, B: $$-60x^{11}y^5$$