1.

25*(y^2*(quad*text)) %2B 16*x^2 %2B 40*(x*y)

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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