SAT Math Multiple Choice Practice Question 541: Answer and Explanation

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Question: 541

19. 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.
B.
C.
D.
E.

Correct Answer: A

Explanation:

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 answer that does not have x2 + y2 as the first part of the equation. Only A is left.

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