Basicly the answer will be a great -9 because it is and i have said so myself.
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x3 - 3x2 + x - 3 = (x - 3)(x2 + 1)
-3x2+10x-3 -(3x2-10x+3) -(3x-1)(x-3)
x3 + ax + 3a + 3x2 = x (x2 + a) + 3 (a + x2) = x (x2 + a) + 3 (x2 + a) = (x2 + a)(x + 3) Checking the work: x3 + ax + 3x2 + 3a or x3 + 3x2 + 3a + ax = x2 (x + 3) + a (3 + x) = x2 (x + 3) + a (x + 3) = (x + 3)(x2 + a)
(3x + 5)(x - 4)
I guess that should be 3 times (x squared) minus 48: 3x2 - 48 = 3(x2 - 16) = 3(x + 4)(x - 4)