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25*(y^2*(quad*text)) %2B 16*x^2 %2B 40*(x*y) |
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Answer» i) 16x² + 40xy + 25y² (4x)² + 2 × ( 4x) × (5y) + (5y)² (4x + 5y)² ii) 81x⁴ - 121x² x² ( 81x² - 121) x² ( (9x)² - 11²) x² ( 9x - 11) ( 9x + 11) |
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