1.

e दि Lo cepard e followring Ca% bt é‘%) (/%ac

Answer»

(5x/2 - 4y/3) (5x/2 - 4y/3)

Use (a - b)(a-b) = (a-b)² = a² + b² - 2ab

So,(5x/2 - 4y/3) (5x/2 - 4y/3)

= (5x/2 - 4y/3)²

= (5x/2)² + (4y/3)² - 2 × 5x/2 × (4y/3)

= 25x²/4 + 16y²/9 - 20xy/3



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