You can
put this solution on YOUR website!
30xy - 72y - 3x²y
Factor out GCF = 3y
3y(10x - 24 - x²)
Rearrange the parenthethetical expression in descending order:
3y(-x² + 10x - 24)
Since the coefficient of x² is negative, factor out -1
3y(-1)(x² - 10x + 24)
-3y(x² - 10x + 24)
Factor the trinomial
-3y(x - 4)(x - 6)
Edwin