Question

(ii) Expand (2x - 3y)^2​

Answer 1

Answer:

4x² - 12xy + 9y²

Step-by-step explanation:

(2x - 3y)²

By using identity: (x - y)² = x² - 2xy + y² ,

= (2x)² - (2 × 2x × 3y) + (3y)²

= 4x² - 12xy + 9y²

Answer 2

(a-b)^2=a^2-2ab+b^2

=2x^2-12xy+3y^2 -ANSWER

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