Friends Urgently need help!!!!!
1) If x²+1/x² = 27, find the value of 3x³+5x-3/x³-5/x .
2) If x²+1/4x² = 8 , find x³+1/8x³.
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(x+1/x)^2=5^2
So, x+1/x =5
x3 +1/x3 +3*5 = 125
So, x3+1/x3 =110
Now substitute values
So, x+1/x =5
x3 +1/x3 +3*5 = 125
So, x3+1/x3 =110
Now substitute values
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