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I will assume you mean 7x + 5. In general, a binomial (two terms) can ONLY be factored if both terms have a common factor, OR you have a difference of squares. No other cases are possible, since the product of two binomials is, in general, a trinomial (three terms). Since none of these special cases apply, the expression can't be factored.

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9y ago

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Wiki User

9y ago

7x5 has three factors: 5, 7 and x.

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Anonymous

Lvl 1
4y ago

dont know

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Q: Why can't 7x 5 be factored?
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