Question 2

Simplify $$\frac{2}{1-\sqrt{2}}$$

Solution

2/(1-โˆš2)

=2(1+โˆš2)/(1-2) (multiply the numerator and denominator by (1+โˆš2)).

=-2(1+โˆš2).

C is correct choice.


Create a FREE account and get:

  • Download RRB Study Material PDF
  • 45+ RRB previous papers with solutions PDF
  • 300+ Online RRB Tests for Free

cracku

Boost your Prep!

Download App