Ответы и объяснения

  • Участник Знаний
2013-12-03T20:31:58+00:00
1)(x^1/2-y^1/2)(x^1/2+y^1/2)/x^1/2+y^1/2)=x^1/2-y^1/2
2)
1)((x^1/4+y^1/4)^2-(x^1/4-y^1/4)^2)/(x^1/2-y^1/2)=(x^1/2+2x^1/4y^1/4+y^1/2-x^1/2+2x^1/4y^1/4-y^1/2)/(x^1/2-y^1/2)=4x^1/4y^1/4/(x^1/2-y^1/2)
2)1/y^1/2-1/x^1/2=(x^1/2-y^1/2)/x^1/2y^1/2
3)4x^1/4y^1/4/(x^1/2-y^1/2)*(x^1/2-y^1/2)/x^1/2y^1/2=4/x^1/4y^1/4