It is: x^2 -9 = (x +3)(x -3)
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what kind of polynomial is shown 3x3+x+1
-3(x - 3)(x + 1)(x + 1)
3x(x - 5)(x - 3)
3x(x - 2)(x - 4)
3X3 + 12X2 + 9X 3X(X2 + 4X + 3) 3X(X + 1)(X + 3) --------------------------------far as can be factored and you should see X intercepts of original function