# How do you multiply (5n^2)(2n^5 - 2n^3 3n^7)?

10${n}^{7}$ -30 ${n}^{12}$
5${n}^{2}$ will multiply with both the terms inside the parentheses. On multiplication the exponents would add with the same base n. Final result would be 10${n}^{7}$ -30${n}^{12}$ .