Срочно 625^0,75*243^-0,4-8^-2/3*27^1/3+289^0,5=
(5^4)^0,75 * (3^5)^(-0,4) -(2^3)^(-2/3) * (3^3)^(1/3) +(17^2)^0,5= =5^3 * 3^(-2) -2^(-2) *3 +17=125*(1/9) - 3/4 +17=125/9+16(1/4)= =(125*4+65*9) /36=(500+585)/36=1085/36=30(5/36)