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Mathematics 7 Online
OpenStudy (thomasfire55):

Factor 1052 - 82 into two prime factors.

OpenStudy (prathamesh_m):

1052-82 as in 970?

OpenStudy (thomasfire55):

i guess

OpenStudy (prathamesh_m):

Isn't that actually impossible? It would have more than two prime factors.

OpenStudy (prathamesh_m):

Or if you're asking for any two prime factors you could say 5 and 2.

OpenStudy (thomasfire55):

sorry red it wrong \[105^{2}-8^{2}\]

OpenStudy (prathamesh_m):

oh ok. Try using \[a ^{2}-b ^{2}=(a+b)(a-b)\]

OpenStudy (prathamesh_m):

Did you get it?

OpenStudy (thomasfire55):

10961?

OpenStudy (prathamesh_m):

Yup that's the number. But if you observe closely, \[105^{2}-8^{2}=113\times97\]

OpenStudy (prathamesh_m):

113 and 97 are both prime numbers.

OpenStudy (thomasfire55):

oh thanks can you help me with another please

OpenStudy (prathamesh_m):

Yeah sure.

OpenStudy (thomasfire55):

If the length of one leg of a right triangle is 16 and the length of the other leg is odd, what are the lengths of all the sides of the triangle?

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