math
posted by help shaikha 3 on .
The equation that has the roots 1, 2, 3 is:
(a) x3 + 6x2 – 11x + 6
(b) x3 – 6x2 + 11x – 6 *
(c) x3 + 6x2 + 11x + 6
(d) x3 – 6x2 – 11x – 6
how ?

if the roots are 1,2,3, then
(x1)(x2)(x3) = 0
expand to get (b)
By the way, none of the answers as written are equations. the correct answer would be
x^3  6x^2 + 11x  6 = 0