???????? "evaluate" meen tu find value at spesified value ??????? yu dont giv a spesified value, so kant evaluate maebee yu just wanna simplifi (1/2)^2 -(2/3)^2 -2 /[(3//5)^2)] werk on last part...(3/5)^2=(9/25) & -2 / (9/25) become -2*(25/9)=-50/9 =(1/4) -(4/9) -(50/9) eezee wae...1/4=0.25, 4/9=0.44444444444..., 50/9=55.555555555555.. or yu hav (1/4) -(54/9) =(1/4)-6 =-5.25