pocti_vladys, 3x^2 6x^2 12x^2 9x^2 15x^2 2x Щас допишу The post was merged to previous May 31, 2021 -5/(1-4y)^2 (t^4+3t^2-10t)/(1+t^2)^2 The post was merged to previous May 31, 2021 pocti_vladys, 2x 5x^4-14x