What is the value of $(x - y)^4$ ?

(1) The product of $x$ and $y$ is $7$ .
(2) $x$ and $y$ are integers.

Correct answer marked below

Statement (1) ALONE is sufficient

Statement (2) ALONE is sufficient

BOTH statements TOGETHER are sufficient

Correct

EACH statement ALONE is sufficient

Statements (1) and (2) TOGETHER are NOT sufficient

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What this question tests

Your ability to manipulate linear and quadratic expressions, substitute unknowns, and solve equations under time pressure.

Losing a sign when moving terms across the equals sign, or dividing both sides by a variable that could equal zero.

What is the value of (x−y)4(x - y)^4(x−y)4 ?(1) The product of xxx and yyy is 777.(2) xxx and yyy are integers.