Question

please answer in photo​

Answer 1

Answer:

Step-by-step explanation:

We know that (a + b)² - (a - b)² = 4ab.

(4xy+3y)² - (4xy - 3y)² = 4 * 4xy*3y = 48xy²

Equating this to xy²k

48xy² = xy²k

=> k = 48.

Answer 2

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The value of k = 48