Question

5 x square - 6 x square whole square​

Answer 1

5x^2 - (6x)^2

=5x^2 - 36x^2

=-31x^2

Answer 2

Hey mate ☺️

${(5 {x}^{2} - 6 {x}^{2} )}^{2} \\ = > \: {( - 1 {x}^{2}) }^{2} \\ = > \: 1 {x}^{2}$

I hope it helps you ☺️✌️✌️