71^2-23^2+94*42/62^2*32^2 решитее

[tex] \frac{71^2 -23^2 + 94*42 }{62^2+32^2} = \frac{5041-529+3948}{3844+1024} = \frac{8460}{4868} = \frac{2115}{1217} = 1 \frac{898}{1217} [/tex]