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Ostrovityanka [42]
3 years ago
9

The solution set for x^2 -x -56=0 is A.{7,8} b. {-7} c. {8} d. {-7,8} e. {7.-8}

Mathematics
1 answer:
podryga [215]3 years ago
5 0
I believe the answer is E
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Answer:

  4mn/(3m+12)

Step-by-step explanation:

It is often helpful to factor expressions so that common factors can cancel.

  \dfrac{8n^2}{m^2-16}\times\dfrac{m^2-4m}{6n}=\dfrac{8mn^2(m-4)}{6n(m-4)(m+4)}=\dfrac{4mn}{3(m+4)}\\\\=\boxed{\dfrac{4mn}{3m+12}}

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