B = (sqrt(x) - 1)/(3sqrt(x) - 1) - 1/(3sqrt(x) + 1 - Dicamon

Question

B = (sqrt(x) - 1)/(3sqrt(x) - 1) - 1/(3sqrt(x) + 1) + (8sqrt(x))/(9x - 1); x > 0, x = 1/9; B = (sqrt(x) - (3x + 1)/(x + 3sqrt(x))) * (sqrt(x) + 3)/(sqrt(x) - 1)

Answer

B = (sqrt(x) - (3x + 1)/(sqrt(x) + 3sqrt(x))) * (sqrt(x) + 3)/(sqrt(x) - 1) = (sqrt(x) - (3x + 1)/(sqrt(2x) * (3 + sqrt(x)))) * (sqrt(x) + 3)/(sqrt(x) - 1)

giúp mình giải 3 câu lun nha cảm ơn😘