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- In secondary school, FOIL is a mnemonic for the standard method of multiplying two binomials—hence the method may be referred to as the FOIL method. The word FOIL is an acronym for the four terms of the product:
* First ("first" terms of each binomial are multiplied together)
* Outer ("outside" terms are multiplied—that is, the first term of the first binomial and the second term of the second)
* Inner ("inside" terms are multiplied—second term of the first binomial and first term of the second)
* Last ("last" terms of each binomial are multiplied) The general form is Note that a is both a "first" term and an "outer" term; b is both a "last" and "inner" term, and so forth. The order of the four terms in the sum is not important and need not match the order of the letters in the word FOIL. (en)
- 根据乘法分配律，当两个数的和与另一个数相乘时，可将被相加的两个数分别与第三数相乘，再将所得的积相加。公式是：。像或这样的已知数与未知数只能通过两数之和的形式来简便地表达，而它们与另一个数的乘积便需要通过乘法分配律来展开。 (zh)
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- 根据乘法分配律，当两个数的和与另一个数相乘时，可将被相加的两个数分别与第三数相乘，再将所得的积相加。公式是：。像或这样的已知数与未知数只能通过两数之和的形式来简便地表达，而它们与另一个数的乘积便需要通过乘法分配律来展开。 (zh)
- In secondary school, FOIL is a mnemonic for the standard method of multiplying two binomials—hence the method may be referred to as the FOIL method. The word FOIL is an acronym for the four terms of the product:
* First ("first" terms of each binomial are multiplied together)
* Outer ("outside" terms are multiplied—that is, the first term of the first binomial and the second term of the second)
* Inner ("inside" terms are multiplied—second term of the first binomial and first term of the second)
* Last ("last" terms of each binomial are multiplied) The general form is (en)
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- FOIL method (en)
- 乘法分配律 (zh)
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