Simplify the expression: 7a⁵b³ (-3a²b + 2b⁴ - 5a³)

To simplify the expression, distribute 7a⁵b³ to each term inside the parentheses:

\( 7a^5b^3 \cdot (-3a^2b) = -21a^{5+2}b^{3+1} = -21a^7b^4 \)

\( 7a^5b^3 \cdot 2b^4 = 14a^5b^{3+4} = 14a^5b^7 \)

\( 7a^5b^3 \cdot (-5a^3) = -35a^{5+3}b^3 = -35a^8b^3 \)

Combining these terms, we get:

\( -21a^7b^4 + 14a^5b^7 - 35a^8b^3 \)

Ответ: -21a⁷b⁴ + 14a⁵b⁷ - 35a⁸b³.