Among y cubed, 7x squared, 14, 23, 4y cubed, 9x, and 5x squared, which two terms are like terms with 7x squared?

1. Like terms must share the same variable raised to the same power. 2. 7x squared and 5x squared both use the variable x raised to the second power, so they match. 3. 9x uses x raised to the first power, not the second, so it does not match 7x squared. 4. 14 is a constant with no variable at all, so it cannot be a like term with 7x squared. _Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 1 "Foundations", section 1.2 Use the Language of Algebra_