Question

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

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Answer 1

Answer:

We have,

(3x+2y)

2

=(3x)

2

+2.3x.2y+(2y)

2

=9x

2

+12xy+4y

2

And,

(3x−2y)

2

=(3x)

2

−2.3x.2y+(2y)

2

=9x

2

−12xy+4y

2

Therefore,

(3x+2y)

2

−(3x−2y)

2

=9x

2

+12xy+4y

2

−9x

2

+12xy−4y

2

=24xy

Answer 2

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