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Mathematics 7 Online
OpenStudy (anonymous):

.

jimthompson5910 (jim_thompson5910):

hint: 80 - 125x^2 = 5(16 - 25x^2)

jimthompson5910 (jim_thompson5910):

it doesn't have to go first

jimthompson5910 (jim_thompson5910):

you can factor out a negative, and make it first, but it's not crucial

jimthompson5910 (jim_thompson5910):

you're welcome

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