Question

4 x² - 9y² factorises to

Answer 1

Answer:

4x² - 9y² .

(4x×4x) - (9y×9y) .

(16x) - (81y)

is your right answer

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Answer 2

Answer:

(2x + 3y) (2x - 3y)

Step-by-step explanation:

Rewrite 4 x² - 9y² as (2x²) - (3y²).  Use the difference of squares formula:

x² - y² = (x + y) (x - y).

(2x²) - (3y²) = (2x + 3y) (2x - 3y)