Answer:
it got copied at 6:44 pm
Step-by-step explanation:
194.
x = (7+4√3)
x^2 = x = (7+4√3)^2
= 49 + 48 + 56√3
= 97 + 56√3
x^2 + 1/x^2 = 97 + 56√3 + 1/(97 + 56√3)
= 194.
4
hope this helps......
10-[6-4+(5)]×2
10-[2+5]×2
10-(7)×2
10-14= -4
