Answer:
2x² - xy - 15y²
Step-by-step explanation:
(2x + 5y)(x - 3y)
Each term in the second factor is multiplied by each term in the first factor, that is
2x(x - 3y) + 5y(x - 3y) ← distribute parenthesis
= 2x² - 6xy + 5xy - 15y² ← collect like terms
= 2x² - xy - 15y²
