Question

(1+$\sqrt{2}$ ) by (1-$\sqrt{2}$ )

Answer 1

Answer:

3+2√2

Step-by-step explanation:

(1+√2)/(1-√2)

=(1+√2)(1+√2)/(1-√2)(1+√2)

=(1+√2)^2/(1)^2-(√2)^2

=(1)^2+2(1)(√2)+(√2)^2/1-2

=1+2√2+2/-1

=3+2√2

hope this helps you..

Answer 2

I think it is useful for u