Factorise the equation
=x^8+y^8
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ts very tpugh
Step-by-step explanation:
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(x⁴)²+(y⁴)² = (x⁴+y⁴)²-2x⁴y⁴
= {(x²+y²)²-2x²y²}² -2x⁴y⁴
= [{x+y)²-2xy}²-2x²y²]-2x⁴y⁴
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