(2x + 1)(x + 3) are the factors.
51.07142857142857
The factors are 2n(4n + 3).
The factors of 72 are 1,2,3,4,6,8,9,12,18,24,36,72.
That factors to (b + 3)(a + c)
x2 + 3x + 2 factors into (x + 1) (x + 2)
Any product of any list of factors is zero, if one of the factors is zero.
Assuming you mean n2 + 11n + 30, the factors are (n + 6)(n + 5).
The factors of x2 are x and x x times x plus 1 = x2 + x
The factors of x2 + 5x + 4 would be (x + 1) and (x + 4)
r2 - 19r + 120 has no real factors.
(4x + 1)(x + 5)