Question

(√20+√18)-(√50-√45)/√8-√125
Решение

Answer 1

((√20 + √18) - (√50 - √45))/(√8 - √125) =
 = ((2√5 + 3√2) - (5√2 - 3√5))/(2√2 - 5√5) =
= -(2√2 - 5√5) /(2√2 - 5√5) = -1