Hey there! :)
(2x² + 4y)(3x - y)
Simplify.
(2x² · 3x) + (2x² · - y) + (4y · 3x) + (4y · -y)
(6x³) + (-2x²y) + (12xy) + (-4y²)
Remove parenthesis.
6x³ - 2x²y + 12xy - 4y²
~hope I helped!~