Question

HELP i don’t know how to answer this

Answer 1

Answer:

The answer is on the screenshot

Step-by-step explanation:

The steps are also in 2nd screenshot and is on the website, just type in the thing you need solved. Hope i helped :)

Answer 2

Answer:

$f(x)= (x-1)(3+\sqrt{5})(3-\sqrt{5})$

Step-by-step explanation:

factor further

$f(x)= x^3 -7x^2 +10x -4$

and as you put it:

$f(x)= (x-1)(x^2 -6x +4)$

in the instructions, it says that 1 is a zero.

this is because when x=1

you will see that the first section (x-1) will be (1-1) which is 0

when you multiply 0 by anything, it is 0

so the entire thing would then be zero

(x-1) can not be factored further

but $x^2 -6x +4$ can

factor into  $(3+\sqrt{5})(3-\sqrt{5})$

use quadratic formula

then put it back into equation

$f(x)= (x-1)(3+\sqrt{5})(3-\sqrt{5})$