1. The problem asks to identify the false statement among the given options about absolute values and square roots.
2. Let's analyze each statement:
(a) $|xy| = |x||y|$ is true because the absolute value of a product equals the product of the absolute values.
(b) $|x| = |-x|$ is true since absolute value measures distance from zero, so $x$ and $-x$ have the same absolute value.
(c) $|x + y| = |x| + |y|$ is generally false. The absolute value of a sum is less than or equal to the sum of absolute values (triangle inequality), but not always equal.
(d) $\sqrt{x^2} = |x|$ is true because the square root of $x^2$ is the non-negative value of $x$, which is the absolute value.
3. Therefore, the false statement is (c).
Final answer: (c) $|x + y| = |x| + |y|$ is false.
False Absolute
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