单词	factor
释义	Factor Numbers we can multiply together to get another number. Example: 2 and 3 are factors of 6, because 2 × 3 = 6 A number can have MANY factors! Example: What are the factors of 12? • 3 × 4 = 12, so 3 and 4 are factors of 12 • 2 × 6 = 12, so 2 and 6 are also factors of 12 • and 1 × 12 = 12, so 1 and 12 are factors of 12 as well So 1, 2, 3, 4, 6 and 12 are all factors of 12 And -1, -2, -3, -4, -6 and -12 also, because multiplying negatives makes a positive. In Algebra factors can be expressions like "x+3" etc Example: (x+3) and (x+1) are factors of x2 + 4x + 3:
随便看	turn turn symmetry twelve-hour clock twenty-four hour clock twice two-dimensional two-step equation unary operation undecagon undecimal unearned income unequal union unit unit cost unit fraction unit of measurement unit price unit rate unit vector units univariate data universal set upper bound us standard units

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