Seudónimo Seudónimo

11-01-2017
Mathematics

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The area of a square is found by squaring one of its sides, (A = s ^2). A certain square has an area of z^ 2 + 18z + 81. Factor the trinomial to find a side of the square.
a)side = z + 27
b)side = z + 18
c)side = z + 9

Respuesta :

Аноним Аноним

11-01-2017

z^ 2 + 18z + 81 = (z + 9)^2

so side = z + 9

answer: c)side = z + 9

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