x=√2 , then x4 = ?
Sol: X= √2
=> X2 = 2
Now squaring both sides again
=> (X2)2 = 22
=> X4 = 4
Hence option 3) is the correct answer.
=> X2 = 2
Now squaring both sides again
=> (X2)2 = 22
=> X4 = 4
Hence option 3) is the correct answer.