Question

X =2√3 then value of x^2+1/x^2 and x^2-1/x^2

Answer 1

x=2root3
x^2=(2root3) ^2
x^2=4×3
x^2=12
1/x^2 =1/12
x^2 +1/x^2
12+1/12
12×12 +1/12
144+1/12
145/12
x^2+1/x^2 =145/12
x^2 -1/x^2
12-1/12
144-1/12
143/12
x^2-1/x^2=143/12

Answer 2

Here x^2 value =12
and 1/x^2 value =1/12
x^2+1/x^2 value = 12 +1/12= 145/12 and x^2-1/x^2 = 143/12