Question

Medal & fan Algebra help
What polynomial has roots of -5, -4, and 1?

x3 - 8x2 - 11x + 20
x3 - x2 + 22x + 40
x3 + x2 - 22x - 40
x3 + 8x2 + 11x - 20

Answer 1

@MeganEdward @zepdrix

Answer 2

roots are
x= -5
x=-4
x=1
set each root equal to zero
x = -5 (Add 5 both sides )
x+5 =0 same with other 2 roots then foil

Answer 3

Thanks! <3

Answer 4

hmm got it ?? familiar with the foil method ?

Answer 5

Yes, I'm familiar. So I would foil (x+5)(x+4)(x-1)?

Answer 6

right :=)

Answer 7

Can I foil the first two and then foil the sum with (x-1)?

Answer 8

that would be AWESOME !

Answer 9

(x^2 + 9x + 20)(x-1) and then...

Answer 10

x^3 + 8x^2 +11x -20 ??

Answer 11

perfect! :=)

Answer 12

Thanks a bunch!

Answer 13

np great job 2 u !! :=)