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Chapter 2
Advanced Algebra
Question | Answer |
---|---|
negative number | a number less than 0 |
integer | a whole number or its opposite, including 0. Not including the fractions inbetween |
real number | all numbers on the number line, including positives, negatives, 0, fractions and decimals. |
signed number | numbers presented as a negative or positive. |
addictive inverses | two numbers that add up to 0. (-3 + 3) |
absolute value | the distance of a number from the origin line; the number itself or the opposite of the number, whichever is positive or 0. |
positive number | a number greater than 0 |
subtraction | adding its opposite (x - y = x + (-y) |
multiplication property of negative one | -1 times a number equals the opposite of that number. that is for any real number x. (-1 x X = -x) |
multiplicative inverse reciprocal | two non-zero numbers are multiplicative inverses or reciprocals of eachother if their product equals 1. (2/3 & 3/2 are reciprocals because multiplied together equals 1) 0 has no reciprocal. |
dividing | multiplying by its reciprocal, that is for any real numbers. (x/y = X x 1/y) |
commute | to commute two numbers in an expression means to interchange their positions. |
commuting terms and factors | x + y = y + x X x Y = Y x X |
binary | addition and subtration. numbers are added or multiplied only two at a time. ex. 3+5+9 (3+5)+9 = 3+(5+9) |
associate | group two numbers in parentheses (without changing position) so that the operation between them is done first. |
associating terms and factors | you can associate any 2 factors in a product. |
distance formula | d=rt |