Special Products 2

= \({\left(A-B\right)}^{2}\) , where \(A=3{x}^{4}\) and \(B=5{y}^{2}\)

= \(A^2-2AB+B^2\)

= \({\left(3{x}^{4}\right)}^{2}-2\left(3{x}^{4}\right)\left(5{y}^{2}\right)+{\left(5{y}^{2}\right)}^{2}\)

= \(9{x}^{8}-30{x}^{4}{y}^{2}+25{y}^{4}\)