(m^2-n^2m)^2+2m^3 n^2
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Answer:
Step-by-step explanation:
(m²-n²m)²+2m³n²
(m²-n²m)(m²-n²m)+2m³n²
m⁴-m³n²-m³n²+m²n⁴+2m³n²
m⁴-2m³n²+m²n⁴+2m³n²
=m⁴+m²n⁴
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