Final answer:
To multiply 2x by (x² + 5), distribute 2x to both terms inside the parentheses: 2x³ + 10x.
Step-by-step explanation:
To multiply 2x by (x² + 5), you need to distribute 2x to both terms inside the parentheses. This means you multiply 2x by x² and 5 separately. The result is 2x³ + 10x.
Learn more about Multiplying polynomials