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a.(x-5) (x+3)
b. (x-3) (x+2)
c. (x+3) (x-1)
a. - 2x - 15 = 0
(x-5) (x+3)
x = 5 / x = -3
{-3,5}
b. - x - 6 = 0
(x-3) (x+2)
x = 3 / x = -2
{-2,3}
c. + 2x - 3 = 0
(x+3) (x-1)
x = -3 / x = 1
{-3,1}
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