Question

X equal to 1 divided by 7 + 4 root 3 and Y equal to 1 / 7 minus 4 root 3 then find the value of x cube + y cube​

Answer 1

Answer:

x² + y² = 2/49 + 144

Step-by-step explanation:

x = 1/7 + 4√3

y = 1/7 - 4√3

x + y = 1/7 + 4√3 + 1/7 - 4√3

        = 2/7

xy = (1/7 + 4√3) (1/7 - 4√3)

    = (1/7)² - (4√3)²

    = 1/49 - 144

x² + y²

= (x + y)² - 2xy

= (2/7)² - 2(1/49 - 144)

= 4/49 - 2/49 + 144

= 2/49 + 144

happy to help

Answer 2

Answer:

X^3 + Y^3 = 2702

Step-by-step explanation: