-4
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Negative 4 times 0 is 0.
That is how the absolute value is defined. For x < 0 the value of x is negative (by definition). Therefore, the value of negative x is positive (negative of a negative). So abs(x) = -x when x < 0
-4+0-(-4)+(-4)-1= -4+0+4-4-1= -5
It is: -4--4 = 0
A negative number multiplied by a negative number gives a positive product. EXAMPLE : Find the value of (-3) x (-4) -3 x (4 - 4) = -3 x 0 = 0....expanding the brackets gives -3 x 4 + (-3) x (-4) = 0 -12 + (-3) x (-4) = 0 Therefore (-3) x (-4) = 12 which is a positive number