Ответ №1
x⁴+x²y²+y⁴=x⁴+x²y²+x²y²-x²y²+y⁴=(x⁴+2x²y²+y⁴)-x²y²=(x²+y²)²-x²y²=
=(x²+y²)²-(xy)²=(x²+y²+xy)*(x²+y²-xy)
Ответ №1
x⁴+x²y²+y⁴=x⁴+x²y²+x²y²-x²y²+y⁴=(x⁴+2x²y²+y⁴)-x²y²=(x²+y²)²-x²y²=
=(x²+y²)²-(xy)²=(x²+y²+xy)*(x²+y²-xy)
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