Absolute-value meaning

The numerical value of a real number without regard to its sign. For example, the absolute value of −4 (written |-4|) is 4.
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The modulus of a complex number, equal to the square root of the sum of the squares of the real and imaginary components of the number.
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The magnitude of a real number, disregarding its positive or negative sign.

The absolute value of −4 or +4, written |−4| or |+4|, is 4

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The magnitude of a complex number; modulus.
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The value of a number without regard to its sign. For example, the absolute value of +3 (written |+3|) and the absolute value of −3 (written |−3|) are both 3.
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(mathematics) For a real number, its numerical value without regard to its sign; formally, -1 times the number if the number is negative, and the number unmodified if it is zero or positive; the distance of a quantity from zero on a number line.
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(mathematics) For a complex number, the square root of the sum of the squares of its real and imaginary parts.
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