The latest development of 2 - | a |_ The value is_ When a=_ The minimum value of the algebraic formula (a + 2) * + 5 is | Math enthusiast | Mathematical art

The latest development of 2 - | a |_ The value is_ When a=_ The minimum value of the algebraic formula (a + 2) * + 5 is

2 is a positive number, and | a | is a negative number, so fill in the first space
Its value is 2-0 = 2
I don't understand the following formula. How to calculate the symbols

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