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)
3x2 - 7x - 20 = (3x + 5)(x - 4)
If you mean: 3x squared -11x -20 = 0 Then: x = -5 or x = 4/3
x3 - 3x2 + x - 3 = (x2 +1)( x - 3)
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)
3x2-2x-21 = (3x+7)(x-3)
3(x - 3)(x + 3)
3x2 + 48 + 192 = 3x2 + 240 = 3 (x2+ 80)
3x2 + 10x + 3 = (x + 3)(3x + 1).
-3(x + 3)(x + 3)
x3 + 3x2 - 4x -12 x2(x + 3) - 4(x + 3) (x2 - 4)(x+3)