Find the possible value or values of y in the quadratic equation 4 – 4y – y2 = 0.
a. y = –2 + 2√ 2, y = −2 − 2√ 2
b. y = –4, y = 1
c. y = –3, y = –1
d. y = 2

Option A

Step-by-step explanation:

we have

we know that

The formula to solve a quadratic equation of the form is equal to

in this problem we have

so

substitute

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )