Algebra Practice Test 2026 – Complete Exam Preparation

To find the sum of the coefficients in the polynomial \(3x^2 + 4x - 5\), you simply add the coefficients of each term in the polynomial together. The coefficients are the numbers in front of the variable terms and the constant term.

In this polynomial, the coefficients are as follows:

- The coefficient of \(x^2\) is 3.

- The coefficient of \(x\) is 4.

- The constant term is -5.

Now, perform the addition of these coefficients:

\(3 + 4 + (-5) = 3 + 4 - 5\).

Calculating this step-by-step:

1. First, add 3 and 4, which gives you 7.

2. Next, subtract 5 from 7, resulting in 2.

Thus, the sum of the coefficients is indeed 2. This is why the correct answer reflects the calculation of adding the coefficients together.