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Answer:
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Answer:
d)6
Step-by-step explanation:
x = 3+2√2
x+1/x= 3+2√2 + 1/3+2√2
= (3+2√2)(3+2√2) + 1/ 3+2√2
= (3+2√2)^2 +1 / 3+2√2
= 9 + 12√2 + 8 +1 / 3+ 2√2
= 12√2 + 18 / 3+2√2
= (12√2+18)(3-2√2)/3+2√2
= 12√2(3-2√2) + 18(3-2√2)/ (3)^2 - (2√2)^2
= 36√2 - 48 + 54 - 36√2/ 9 - 8
= -48 + 54
= 6
option d. 6