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If the absolute value of a number is equal to itself, then the number must be a positive number.
If the absolute value of a number is equal to itself, then the number must be zero or positive, so the original proposition is wrong.
Therefore, the answer is ×.
If the square root of square-4 of a+ the absolute value of square-1 of b+c=0(abc is a non-negative number), find 2a-b-c=
Square root of a square-4+ absolute value of b square-1+ c=0
Since the root value and absolute value are greater than or equal to zero, c >=0, there are:
A^2-4=0
B^2-1=0
C=0
I.e. a = soil 2, b = soil 1, c =0
A=2, b=1, c=0,2a-b+c=3
A=2, b=-1, c=0,2a-b+c=5
A=-2, b=1, c=0,2a-b+c=-5
A=-2, b=-1, c=0,2a-b+c=-3
RELATED INFORMATIONS
- 1. The absolute value of negative number a and her opposite number is () A.0 B.2a C.-2aD.
- 2. Abc is negative, and the absolute value of x-a + the absolute value of y-b =0, then is xyz negative or positive or non-negative or 0? If abc is negative, and the absolute value of x-a + the absolute value of y-b + the absolute value of z-c =0, then is xyz negative or positive or non-negative or 0?
- 3. The absolute value of a equals negative a, a is? 1. Positive number 2. Negative number 3. Non-negative number 4. Non-positive number
- 4. If the absolute value of a is greater than a, can it be a positive number? Could it be 0? Could it be negative?
- 5. Absolute value of positive,0, negative number What is their absolute value?
- 6. Remove absolute value, how to change the sign before absolute value Like -|-X-2|, do you want to change the front negative? What's going on in there?
- 7. Rational number of solution:(2012 power of -1/5)*(2013 power of -5)+2=_____.
- 8. When a is a positive number (i.e., a >0), the absolute value of a equals () when a is a negative number (i.e., a <0), the absolute value of a equals () when a=0, the When a is a positive number (i.e., a >0), the absolute value of a equals () When a is negative (i.e., a <0), the absolute value of a equals () When a =0, the absolute value of a equals () When a is a positive number (i.e., a >0), the absolute value of a equals () when a is a negative number (i.e., a <0), the absolute value of a equals () when a=0, the When a is a positive number (i.e. a >0), the absolute value of a equals () When a is negative (i.e., a <0), the absolute value of a equals () When a =0, the absolute value of a equals ()
- 9. Two negative numbers,_______ with a high absolute value And the biggest negative integer is ___________ All non-negative integers with absolute value not greater than 3.15 are _________ A _______ with two negative numbers and a large absolute value And the biggest negative integer is ___________ All non-negative integers with absolute value not greater than 3.15 are _________
- 10. Two numbers are negative, but the absolute value of the problem is small, what is the conclusion
- 11. Let a =-2, b = two-thirds, and c =5.5. Write the absolute value, inverse number, and reciprocal of a, b, and c, respectively
- 12. Given that the absolute value of negative number a is 3 1/2, the opposite number of b is 1 1/2, and the reciprocal of c is 2, try to find the value of a+b of c
- 13. Why is a negative number minus a positive number equal to the sum of the absolute values of two numbers? Why is a negative number minus a positive number equal to the absolute sum of two numbers?
- 14. If the three sides of the triangle ABC are a, b, c, the square b of the cubic-a of the condition a + the square b of the square-ac of the ab + the cubic b of the square-b of the bc =0, find the shape of the triangle ABC
- 15. Given that the absolute values of (x+y-1) and x+2 are mutually opposite, and a, b are mutually reciprocal, try to find the value of y power +ab of x?
- 16. Given that (x+y-1)2 and |x+2| are opposite to each other, a and b are reciprocal, try to find the value of xy+a b.
- 17. Given that the absolute value of the difference of 2a-b is opposite to the square of b-1, find the value of the cube of a+b
- 18. Given that the absolute value of 2a-b is opposite to the square of (b-1), find the value of the cube of (a+b
- 19. If the absolute value of a-5 is opposite to the square of (b+1), then the third power of a + the 25th power of b
- 20. If the absolute value of a number and the sum of its reciprocal equals zero, then the number is ______.