Question

(c) Find the value of k if:
xyềk = (4xy + 3y)2 – (4xy – 3y)2​

Answer 1

Step-by-step explanation:

(a+b)^2-(a-b)^2=4ab

using this identity....

xy2k = (4xy + 3y)2 – (4xy – 3y)2

xy2k = 4×(4xy)(3y)

xy^2 k=xy^2(48)

Answer 2

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