Answer :
Lol, I couldn't figure out how to write it out, but I do think that it's right. But if not I'm sorry!

given:
[tex](3x - 2)5 \times 15 - 2 \times 15x \times 3x - 10[/tex]
to find:
simplest form by using distributive property.
solution:
[tex](3x - 2)5 \times 15 - 2 \times 15x \times 3x - 10[/tex]
[tex] = 75(3x - 2)x - 30x -30x - 10[/tex]
[tex] = 225 {x}^{2} - 150x - 60x - 10[/tex]
[tex] = 225 {x}^{2} - 210x - 10[/tex]
[tex] = 5(45 {x}^{2} - 42x - 2)[/tex]