14-08-2018
Mathematics

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16-25(b+3) square

Emergency question. If you can, prove your intelligence and Help me with this problem.
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briittanypaiige briittanypaiige

14-08-2018

since 16 and 25 are perfect squares you can factor the first part.
4^2-5^2(b+3)^2
=(4-5(b+3))(4+5(b+3))
=(4-5b-15)(4+5b+15)
=(-11-5b)(19+5b)

Which can be expanded if necessary,
= -209+150b-25b^2

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