Question

Find the value of k if
xy²k = (4xy + 3y)² - (4xy - 3y)²​

Answer 1

Answer:

48

Step-by-step explanation:

xy^2k = (4xy + 3y)^2 - (4xy - 3y)^2

          = 16x^2y^2 + 9y^2 + 24xy^2 - 16x^2y^2 - 9y^2 +24xy^2

xy^2k = 48xy^2

k = 48

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Answer 2

Answer:

R.H.S

apply formula of a^2- b^2

=(4xy+3y+4xy-3y)(4xy+3y-4xy+3y)

=8xy×6y

=48x^2y

comparing L.H.S. and R.H.S

k=48