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posted by anonymous Thursday, April 10, 2014 at 12:12am.
find the zeros by factoring -x^2 - 4x + 5 = y
y = -(x^2+4x-5) y = -(x+5)(x-1) Now, if a product of factors is zero, any of the factors can be zero. So, which values of x make each of the factors zero?
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