-7+1/-4+2 is -6/-2 which is 3
I think you have to solve like each section like (5x3+3)2 first solve that and then solve the middle one and then the last one and I think they all have to be equal to each other , and if they aren’t then her anwser isn’t correct
Length = √area = √81 = 9
diagonal = √2 * side = √2*9 = 9√2
