(vii) (m²-n²m²)²+2m³n²
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Answer:
= m² (m² + n⁴)
Step-by-step explanation:
= (m² - n²m)² + 2m³n²
= (m⁴ + n⁴m² - 2m³n²) + 2m³n² { ∵ (a + b)² = a² + b² - 2ab }
= m⁴ + n⁴m²
= m² (m² + n⁴)
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