因式分解x^4+4x^2y^2+16y^4
问题描述:
因式分解x^4+4x^2y^2+16y^4
答
^是什么意思?
答
x⁴+4x²y²+16y⁴
=x⁴+8x²y²+16y⁴-4x²y²
=(x²+4y²)²-(2xy)²
=(x²+4y²+2xy)(x²+4y²-2xy)
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答
x^4+4x^2y^2+16y^4
=(x²+2y²)²
答
x^4+4x^2y^2+16y^4
=x^4+8x^2y^2+16y^4-4x²y²
=(x²+4y²)²-(2xy)²
=(x²+2xy+4y²)(x²-2xy+4y²)
答
原式=x^4+8x²y²+16y^4-4x²y²
=(x²+4y²)²-4x²y²
=(x²+2xy+4y²)(x²-2xy+4y²)