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The product of three rational numbers a `b` c `is negative, and its sum is positive. When x=|a|/a+|b|/b+|c|/c, try to find the value of 2009 x-92x+2
If the product of three numbers is negative, the positive and negative of these three numbers may be three negative, or one negative and two positive, plus the positive, then it is impossible to be three negative. So the absolute value of the positive number is equal to itself, and the negative is the opposite number. X=1+1+(-1)(the positions may be different, and the results are the same) X=1
Count the rest.
1. If the rational numbers A and B are mutually opposite, then the sum of the two numbers is? If the rational numbers A and B are reciprocal, then the product of the two numbers is? 2. Calculation (-0.25) X 0.5X (-70 and 3/5) X4 (-One and two thirds) X (-18)-15 X one and two thirds Four tenths and fifths X (-25) The formula! 1. If the rational numbers A and B are mutually opposite, then the sum of the two numbers is? If the rational numbers A and B are reciprocal, then the product of the two numbers is? 2. Calculation (-0.25) X 0.5X (-70 and 3/5) X 4 (-One and two thirds) X (-18)-15 X one and two thirds Four tenths and fifths X (-25) The formula!
1. If the rational numbers A and B are mutually opposite, then the sum of the two numbers is 0. If the rational numbers A and B are mutually reciprocal, then the product of the two numbers is 12. Calculate (-0.25) X0.5X (-70 and three fifths) X4=(-0.25×4)×0.5×(-70.6)=-1×1/2×(-70.6)=35.3(-1 and two thirds) X (-18)-15X-.
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