因式分解:(x²+16y²)²-64x²y²=?

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因式分解:(x²+16y²)²-64x²y²=?

因式分解:(x²+16y²)²-64x²y²=?
因式分解:(x²+16y²)²-64x²y²=?

因式分解:(x²+16y²)²-64x²y²=?
由(x²+16y²)²-64x²y²
=(x²+16y²+8xy)(x²+16y²-8xy)
=(x+4y)²(x-4y)²

原式=(x²+16y²+8xy)(x²+16y²-8xy)
=(x+4y)²(x-4y)²

原式=x4+32x2y2+256y4-64x2y2
=x4-32x2y2+256y4
=(x2-16y2)^4

(x²+16y²)²-64x²y²=(x+4y)²-(8xy)²=(x+4y+8xy)(x+4y-8xy)