Special Products 1

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

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

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

= \(25{x}^{2}+20x{y}^{4}+4{y}^{8}\)