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3 years ago

Explain the difference in meaning between I-3I and -3.

Mathematics

2 answers:

dexar [7]3 years ago

7 0

|-3| is an absolute value. This means it will always be positive. -3 is an integer and is negative.

Anastaziya [24]3 years ago

7 0

|-3| is absolute value because of the bars so it is equal to 3. -3 is still-3 so they are the additvr inverse

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For this case we have the following expression:

$5c ^ 2-d ^ 2 + \frac {3} {2} c-4d$

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Substituting we have:

$5 (-1) ^ 2 - (- 4) ^ 2 + \frac {3} {2} (- 1) -4 (-4) =\\5 (1) -16- \frac {3} {2} + 16 =\\5-16- \frac {3} {2} + 16 =\\-11- \frac {3} {2} + 16 =\\- \frac {25} {2} + 16 =\\\frac {-25 + 32} {2} =\\\frac {7} {2}$

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