-4/ 5x^2 + 45 = 0 срочно ответьте
-4\5x^2 = -45 (* -1) 4\5x^2 = 45 5x^2 = 45*4 5x^2 = 180 x^2 = 180\5 x^2 = 36 x = 6 ili x = -6