a. $\quad 3$ b. $\quad 1$ c. $\quad 2$ d. $\quad$ There are like terms: $x$ and $5x$.
Work Step by Step
a. The terms of an algebraic expressions are those parts separated by addition. It can be a number, a variable, or a number times one or more variables. In $ x+2+5x$, three terms are separated by addition b. The numerical part of a term is called its coefficient. If a term is written without a coefficient, the coefficient is understood to be 1 The numerical coefficient of $x$ is 1. c. A term that consists of just a number is called a constant term. In $x+2+5x$, the constant term is $2$. d. The parts of each term that are multiplied are called the factors of the term Like terms are terms that have exactly the same variable factors. Terms $x$ and $5x$ have identical variable factors.