Question

FInd the cubic polynomial function with two of it's zeros 2 ad -3+squareroot2 and a y intercept of 7.

Answer 1

how do i solve this ; what method ?

Answer 2

let the cubic be
\[y=x^3+bx^2+cx+d\]

Its two roots are 2 and -3+ \(\sqrt 2\)
so
y=0 when x=2
and
y=0 when x=\(-3+\sqrt 2\)

and when x=0, y=7
we'll get d from the last and two equations from the roots in terms of a and b

Answer 3

Do you get this @burhan101 ?

Answer 4

no im trying to break it down for myself

Answer 5

@ash2326 okay so what do i so with this info, sorry i am really confused