Вправи 1001 - 1100 » 1088 (е-ж)

е) (x^2+ 2x-15)/(x^2+ 4x-5) = ((x+5)(x-3))/((x+5)(x-1)) = (x-3)/(x-1); є) (x^2- 3)/(x^2- 2√3 x+3) = ((x- √3)(x+ √3))/〖(x- √3)〗^2 = (x+ √3)/(x- √3); ж) (〖2c〗^2- 5c-3)/(〖2c〗^2+ 7x+3) = (2(c-3)(c+0,5))/(2(c+3)(c+0,5)) = (c-3)/(c+3).