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Algebra 10 Online
OpenStudy (anonymous):

The area of a square is found by squaring one of its sides, (A = s2). A certain square has an area of z2 + 18z + 81. Factor the trinomial to find a side of the square.

OpenStudy (anonymous):

z^2 + 18z + 81 factors out to be (z+9)(z+9)

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