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Mathematics 20 Online
OpenStudy (anonymous):

perfect square trinomials

hero (hero):

What about them?

OpenStudy (anonymous):

how do you figure out how to complete one?

hero (hero):

Can you please just post the problem you are working on?

OpenStudy (anonymous):

x^2 -9x

OpenStudy (anonymous):

what number must be added ?

hero (hero):

b over 2 squared: \[\left(\frac{b}{2}\right)^2\]

OpenStudy (anonymous):

thanks !

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