咋做 要步骤 😭😊😊😊😊

咋做 要步骤 😭😊😊😊😊
咋做 要步骤 😭😊😊😊😊

咋做 要步骤 😭😊😊😊😊
x⁴+1/x⁴
=(x²+1/x²)²-2
=[(x+1/x)²-2]²-2
=(5²-2)²-2
=23²-2
=527