Expanding the expression:
-4a(a² - 3ab + 7b) 10x(5x² - 7y) - 6x(5y + 3x²)= -4a(a³ - 3a²b + 7ab) 10x(5x² - 7y) - 6x(5y + 3x²)= -40a(a³ - 3a²b + 7ab) x(5x² - 7y) - 6x(5y + 3x²)= -40a^4 + 120a³b - 280a²b + 200ab x(5x² - 7y) - 30xy - 18x³= -200a^5 + 600a⁴b - 1400a³b + 1000a²b - 35abx - 60ax³= -200a^5 + 600a⁴b - 1400a³b + 1000a²bx - 35abx - 60ax³
Expanding the expression:
-4a(a² - 3ab + 7b) 10x(5x² - 7y) - 6x(5y + 3x²)
= -4a(a³ - 3a²b + 7ab) 10x(5x² - 7y) - 6x(5y + 3x²)
= -40a(a³ - 3a²b + 7ab) x(5x² - 7y) - 6x(5y + 3x²)
= -40a^4 + 120a³b - 280a²b + 200ab x(5x² - 7y) - 30xy - 18x³
= -200a^5 + 600a⁴b - 1400a³b + 1000a²b - 35abx - 60ax³
= -200a^5 + 600a⁴b - 1400a³b + 1000a²bx - 35abx - 60ax³