Question

My answer is C


What polynomial has roots of -4, 2, and 5 ? (3 points)
Answer

x3 - x2 - 22x + 40

x3 + x2 - 22x - 40

x3 + 3x2 - 18x - 40

x3 - 3x2 - 18x + 40

Answer 1

( x +4) ( x - 2) ( x - 5) = 0

Answer 2

can u multiply it

Answer 3

4 x 2 x 5?

Answer 4

= 40

Answer 5

no multiply with the brackets

Answer 6

so confused

Answer 7

let me show u step by step

Answer 8

thank you

Answer 9

(x + 4) (x (x - 5) - 2 ( x - 5) = ( x + 4) ( x^2 -5x -2x + 10)

Answer 10

now
x ( x^2 -5x -2x + 10) + 4 ( x^2 -5x -2x + 10)

Answer 11

now multiply within the brackets

Answer 12

x ( x^2 -5x -2x + 10) + 4 ( x^2 -5x -2x + 10)
x^3 - 7x^2 + 10x + 4 x^2 - 28x + 40
x^3 - 3x^2 -18x + 40

Answer 13

x^3 - 3x^2 -18x + 40 = 0....option D is the answer

Answer 14

ohhh I'm starting to get the steps

Answer 15

yes its very easy..