5n²·(3n+1)-2n·(5n²-3)= ?

Question

5n²·(3n+1)-2n·(5n²-3)= ?

Answer 1

5n²·(3n+1)-2n·(5n²-3)=15n^3+ 5n² - 10n^3 - 6n = 5n^3 + 5n² - 6n
наверное так...