Answer:
One root of f(x) = x³ + x² - 22x - 40 is 5. If 5 is a root of the function, then
✔ x - 5
is a factor.
The result of dividing (x3 + x2 – 22x – 40) by
(x – 5) is x2 + 6x + 8. Select all of the factor(s) of x2 + 6x + 8.
✔ (x + 4)
✔ (x + 2)
The completely factored form of the polynomial is f(x) =
✔ (x – 5)(x + 2)(x + 4)
Explanation:
Krypton (Kr) and bromine (Br) are Period 4 elements that are also called p-block elements. Krypton is a noble gas while bromine is a halogen.
While comparing the stability of the two elements, Krypton is more stable than bromine. This is because being a noble gas, Krypton follows the octet rule and maintains its stability. Bromine has 35 electrons and the outer most valence shell has 7 electrons so its unstable. Krypton has 36 electrons and 8 electrons in the valence shell so its stable.
