Question

racionalize

3/(1-sqrt(x))

Answer 1

   $\frac{3}{1- \sqrt{x} } * \frac{1+ \sqrt{x} }{1+ \sqrt{x} } = \frac{3(1+ \sqrt{x})}{1^2-( \sqrt{x} )^2} = \frac{3(1+ \sqrt{x}) }{1-x}$