It is known that a, b, c are triangular abc with three sides, b, c satisfies that the absolute value of c minus 6 is equal to the square of negative [b-4], and a is full It is known that a, b, c abc with three sides, b, c satisfies that the absolute value of c minus 6 is equal to the square of negative [b-4], and a is full

It is known that a, b, c are triangular abc with three sides, b, c satisfies that the absolute value of c minus 6 is equal to the square of negative [b-4], and a is full It is known that a, b, c abc with three sides, b, c satisfies that the absolute value of c minus 6 is equal to the square of negative [b-4], and a is full

|C-6|=-(b-4)^2
|C-6(b-4)^2=0
C-6 0,(b-4)^2≥0
| C-6|=0,(b-4)^2=0
C=6, b=4

A is a rational number, try to compare the size of a and negative a

Key information
A >-a when a >0
When a

To be divided
A >-a when a >0
When a

To be divided
When a >0, a >-a
When a