Factorise 5x to the power 4 - 80y to the power 4
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Answer:
=5(x²+4y²)(x+2y)(x-2y)
Step-by-step explanation:
5x⁴-80y⁴
=5(x⁴-16y⁴)
=5{(x²)²-(4y²)²}
=5{(x²+4y²)(x²-4y²)}
=5(x²+4y²){(x)²-(2y)²}
=5(x²+4y²)(x+2y)(x-2y)
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