Digital PSAT Math Practice Question 124: Answer and Explanation

Question: 124

(2y⁴ + 3x⁶) + (5x⁶ + 3y⁴) is equivalent to which of the following?

• A. 5y⁴ + 8x⁶
• B. 7y⁴ + 6x⁶
• C. 13y⁴x⁶
• D. 5y⁸ + 8x¹²

Correct Answer: A

Explanation:

(A) Since there's nothing to distribute, you can just drop the parentheses and combine like terms:

The correct answer is choice (A).