SAT Math Multiple Choice Question 1: Answer and Explanation

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Question: 1

1. Which of the following represents the statement “the sum of the squares of x and y is equal to the square root of the difference of x and y”?

  • A. x2 + y2 =
  • B. x2y2 =
  • C. (x + y)2 =
  • D. = (xy)2

Correct Answer: A


A Take it one phrase at a time. The “sum” means you will add two things. The “squares of x and y” means to square x and square y, or x2 and y2. Add these to get x2 + y2. Cross out any choice that does not have x2 + y2 as the first part of the equation. Only (A) is left.