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X squared - 3x - 10 = 0 (x-5) (x+2) = 0 x - 5 = 0 x + 2 = 0 X= 5 x = -2
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3x squared minus 25x minus 28
That factors to 3x(3x - 1)
x(3x - 2)
3x2 - 5x2 = -2x2
x^2 + 3x + 2/(-3x) - x^2 - 2=3x-2+2/(-3x)=3x-2-2/(3x)