Need with full explanation first to answer extra !

Answers:

Step-by-step explanation:

Those brackets indicate absolute value. Absolute value is the distance of a number from 0 on the number line. In other words, negatives don't matter. There is also no such thing as a negative absolute value.

-2     -1      0      1       2

Both -2 and 2 are the same distance from 0, just in the opposite direction. Both numbers have the same absolute value, which is 2.

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step-by-step explanation:

first i did work 2nd i did work and 3rd i did work

it is true

step-by-step explanation:

all the combinations add up i used   calculator