Question

write in expanded form :-
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Answer 1

QUESTION -

(1/3x - 9/5y)²

ANSWER ==>

Using the identity of (a-b)² we solve this question.

(a-b)² = a² + b² - 2ab

(1/3x)² + (9/5y)² - 2 × 1/3x × 9/5y

1/9x² + 81/25y² - 18/15xy

1/9x² + 81/25y² - 6/5xy

HERE IS YOUR ANSWER