计算 [(x²-y²)(x²+y²)]²
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计算 [(x²-y²)(x²+y²)]²
计算 [(x²-y²)(x²+y²)]²
计算 [(x²-y²)(x²+y²)]²
原式=(a⁴-b⁴)²
=a^8-2a⁴b⁴+b^8
计算 [(x²-y²)(x²+y²)]²
计算 [(x²-y²)(x²+y²)]²
计算 [(x²-y²)(x²+y²)]²
原式=(a⁴-b⁴)²
=a^8-2a⁴b⁴+b^8