Special Products 2

= \({\left(A-B\right)}^{2}\) , where \(A={x}^{5}\) and \(B=7y\)

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

= \({\left({x}^{5}\right)}^{2}-2\left({x}^{5}\right)\left(7y\right)+{\left(7y\right)}^{2}\)

= \({x}^{10}-14{x}^{5}y+49{y}^{2}\)