Question

Find expansion
expansion of
of the following using
identities
= (3x+7y) (3x-7y)​

Answer 1

$(3x + 7y)(3x - 7y)$

$9 {x}^{2} - 21xy + 21xy - 49y$

$3 {x}^{2} - 7y$

I hope you understand.