Question

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

Answer 1

Your answer !!

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$(2x + 3y) (2x - 3y) \\ \\ Using \: Identity \\ \\ {a}^{2} - {b}^{2} = (a + b) (a + b) \\ \\ {(2x)}^{2} - {(3y)}^{2} \\ \\ 4{x}^{2} - 9{y}^{2}$

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Answer 2

2x(2x-3y) + 3y(2x-3y)
=2xsquare -6xy + 6xy -9ysquare
-6xy+6xy will be cancel out
and your ans is
2xsquare -9ysquare