### All PSAT Math Resources

## Example Questions

### Example Question #1 : Simplifying Polynomials

Evaluate the following:

**Possible Answers:**

**Correct answer:**

Explanation:

To subtract these two trinomials, you first need to flip the sign on every term in the second trinomial, since it is being subtrated:

Next you can combine like terms. You have two terms with , two terms with , and two terms with no variable:

### Example Question #1 : How To Subtract Trinomials

Find the difference:

**Possible Answers:**

**Correct answer:**

Explanation:

Find the difference:

Distribute the negative to the second trinomial:

Combine like terms:

### Example Question #1 : Quadratic Equations And Inequalities

Subtract:

**Possible Answers:**

**Correct answer:**

Explanation:

When subtracting trinomials, first distribute the negative sign to the expression being subtracted, and then remove the parentheses:

Next, identify and group the like terms in order to combine them: .

Aaron

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Portland State University, Bachelors, Economics. Portland State University, Masters, Environmental and Resource Management.