Question

help me please?
What is a quartic function with only the two real zeros given?

x = -4 and x = -1

A. y = x^4 + 5x^3 + 5x^2 + 5x + 4

B. y = x^4 - 5x^3 - 5x^2 - 5x - 4

C. y = -x^4 + 5x^3 + 5x^2 + 5x + 4

D. y = x^4 + 5x^3 + 5x^2 + 5x - 5

Answer 1

Plug each of the x values into the functions, and check the whole thing is equal to zero...

so start with x=-4 plugged into

y = x^4 + 5x^3 + 5x^2 + 5x + 4

if it's equal to zero, and it's also zero when you plug in x=-1, that's your function.

Answer 2

can you help me with other questions as well please

Answer 3

Maybe but i gotta go home very soon.

Answer 4

What polynomial has a graph that passes through the given points?

(-2, 2) (-1, -1) (1, 5) (3, 67)

A. y = -x^3 + 4x^2 + 2x - 2

B. y = x^3 + 4x^2 + 2x - 2

C. y = x^4 + 4x^3 + 2x^2 - 2x

D. y = x^3 - 4x^2 - 2x - 2

Answer 5

Plug in the x, see if the y is the same as shown. If not, the point does not pass through

Answer 6

All of the points must pass through the function for it to be true.

Answer 7

how do i do that...?

Answer 8

Take the x value for the point (-2,2) for the function A
does it get the same y value?