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posted by Victoria Tuesday, May 13, 2014 at 12:49pm.
Factor the polynomial by grouping. 1. -20 + 5y^2 + 4z - y^2z
rearrange things just a bit and you have 5y^2-20 - y^2z + 4z 5(y^2-4) - z(y^2-4) (5-z)(y^2-4) (5-z)(y+2)(y-2)
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