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 #61 : Algebra
Find the difference:
Possible Answers:
Correct answer:
Explanation:
Find the difference:
Distribute the negative to the second trinomial:
Combine like terms:
Example Question #50 : Variables
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: .
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