The difference between Expand and Factor
When used as verbs, expand means to change (something) from a smaller form and/or size to a larger one, whereas factor means to find all the factors of (a number or other mathematical object) (the objects that divide it evenly).
Factor is also noun with the meaning: a doer, maker.
check bellow for the other definitions of Expand and Factor
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Expand as a verb (transitive):
To change (something) from a smaller form and/or size to a larger one; to spread out or lay open.
Examples:
"You can expand this compact umbrella to cover a large table."
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Expand as a verb (transitive):
To increase the extent, number, volume or scope of (something).
Examples:
"A flower expands its leaves."
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Expand as a verb (transitive):
To express (something) at length and/or in detail.
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Expand as a verb (transitive, algebra):
To rewrite (an expression) as a longer, yet equivalent sum of terms.
Examples:
"Use the binomial theorem to expand (x+1)<sup>4</sup> to x<sup>4</sup> + 4x<sup>3</sup> + 6x<sup>2</sup> + 4x + 1."
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Expand as a verb (transitive, arithmetic):
To multiply both the numerator and the denominator of a fraction by the same natural number yielding a fraction of equal value
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Expand as a verb (intransitive):
To change from a smaller form/size to a larger one.
Examples:
"Many materials expand when heated."
"This compact umbrella expands to cover a large table."
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Expand as a verb (intransitive):
To increase in extent, number, volume or scope.
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Expand as a verb (intransitive):
To speak or write at length or in detail.
Examples:
"He expanded on his plans for the business."
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Expand as a verb (intransitive):
To feel generous or optimistic.
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Factor as a noun (obsolete):
A doer, maker; a person who does things for another person or organization.
Examples:
"The factor of the trading post bought the furs."
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Factor as a noun (now, _, rare):
An agent or representative.
Examples:
"w Christopher Marlowe"
"'1985 [[w:Haynes Owners Workshop ManuaHaynes Owners Workshop Manual]], BMW"
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Factor as a noun (legal):
A commission agent. A person or business organization that provides money for another's new business venture; one who finances another's business. A business organization that lends money on accounts receivable or buys and collects accounts receivable.
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Factor as a noun:
One of the elements, circumstances, or influences which contribute to produce a result.
Examples:
"The greatest factor in the decision was the need for public transportation."
"The economy was a factor in this year's budget figures."
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Factor as a noun (mathematics):
Any of various objects multiplied together to form some whole.
Examples:
"3 is a factor of 12, as are 2, 4 and 6."
"The factors of the Klein four-group are both cyclic of order 2."
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Factor as a noun (root cause analysis):
Influence; a phenomenon that affects the nature, the magnitude, and/or the timing of a consequence.
Examples:
"The launch temperature was a factor of the Challenger disaster."
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Factor as a noun (economics):
A resource used in the production of goods or services, a factor of production.
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Factor as a noun (Scotland):
A steward or bailiff of an estate.
Examples:
"rfquotek Sir Walter Scott"
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Factor as a verb (transitive):
To find all the factors of (a number or other mathematical object) (the objects that divide it evenly).
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Factor as a verb (of a number or other mathematical object, intransitive):
To be a product of other objects.
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Factor as a verb (commercial, transitive):
To sell a debt or debts to an agent (the factor) to collect.