12. If x=2+V3. find the value of x2+
1/x2
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Answered by
0
Step-by-step explanation:
if x =2+v3
the x² + 1/x² is
x² =(2+v3)²
1/x²= 1/ (2+ v3)²
on solving we get answer
hope it helps ☺️
Answered by
0
Answer:
8√3
Step-by-step explanation:
a = 2 + √3
a^2 = 7 + 4√3
1/a^2 = 1/7+4√3
= 1/7+4√3 * 7-4√3 / 7-4√3
a^2= 7-4√3
Put a^2 and 1/a^2 in given equation
= 7 + 4√3 - (7 - 4√3)
= 7 + 4√3 - 7 + 4√3
= 8√4
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