What is the coefficient of 7x² in the expression 2x + 7x² - 3?

What is the coefficient of 7x² in the expression 2x + 7x² - 3?

• A. 2
• B. 7
• C. 3
• D. 0

Answer: (B)

In the expression 2x + 7x² - 3, the term that includes x² is 7x². The coefficient of a term is the numerical factor that multiplies the variable. In this case, the coefficient of x² is simply the number in front of the x², which is 7. Hence, the coefficient of 7x² is indeed 7. Understanding that coefficients are the numbers multiplying the variables helps clarify how to identify them within algebraic expressions. Since the other terms do not contain x², their coefficients do not pertain to the question about the coefficient of 7x², focusing solely on the specific term in question makes it easier to arrive at the correct answer.

In the expression 2x + 7x² - 3, the term that includes x² is 7x². The coefficient of a term is the numerical factor that multiplies the variable. In this case, the coefficient of x² is simply the number in front of the x², which is 7. Hence, the coefficient of 7x² is indeed 7.

Understanding that coefficients are the numbers multiplying the variables helps clarify how to identify them within algebraic expressions. Since the other terms do not contain x², their coefficients do not pertain to the question about the coefficient of 7x², focusing solely on the specific term in question makes it easier to arrive at the correct answer.