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Q: How do you determine if a number can be factored by 7?

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28 = 2 × 2 × 7 = 2² × 7.

If a number cannot be factored it is a prime number.

6x2-17x+7 = (2x-1)(3x-7) when factored

Yes. The number 973 can be factored as 7 x 139. *see related link

It is 7*7*7.

As a product of its prime factors: 5*5*7 = 175

9x2+2x-7 = (9x-7)(x+1) when factored

If you mean: 5x+35 then when factored it is 5(x+7)

A number can be factored to determine whether it is prime or composite. A prime number has exactly 2 factors, 1 and the number itself. A composite number has more than two factors.

composite >_>

It is called a composite number

56

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