Question

WILL FAN & MEDAL :)

Find a cubic function with the given zeros.

7, -3, 2

A f(x) = x3 - 6x2 - 13x - 42
B f(x) = x3 - 6x2 + 13x + 42
C f(x) = x3 - 6x2 - 13x + 42
D f(x) = x3 + 6x2 - 13x + 42

Answer 1

i think its B

Answer 2

@mathmale can you help?

Answer 3

given zeros mean those are the x values when f(x) = 0
(x+2)(x-5)(x+6) = 0
expand and you have your function f(x)

Answer 4

where did you get 2,-5 and 6 from?

Answer 5

Its B.

Answer 6

sorry i read it wrong

Answer 7

its B :)