Answer:
-28p^5 - 21p^4 + 7p^3
Step-by-step explanation:
Apply the distributive property by multiplying -7p^3 into each term within the parenthesis. When you multiply expressions with the same base and an exponent, remember to add the exponents. For example a^2 (a^3) = a^ 2+3 = a^5.
-7p 3(4p 2 + 3p - 1)
-28p^5 - 21p^4 + 7p^3
