Question

x²-1/x=1/2 then 4x²+4/x² =​

Answer 1

Answer:

4x²+4/x²=9

Step-by-step explanation:

x-1/x=1/2

squaring we get

x²+1/x²-2x*1/x=1/4

x²+1/x²-2=1/4

x²+1/x²=1/4+2=9/4

thus

4(x²+1/x²)=4*9/4

4x²+4/x²=9