Question

1 + root 2 upon 2 minus root 2​

Answer 1

1+√2/2-√2×2+√2/2+√2

1+√2(2+√2)/4-2

2+√2+2√2+2√2/2

2+√2+4√2/2

2+5√2/2

5√2

Answer 2

Answer:

1+√2/2-√2

multiply numerator and denominator by 2+√2

numerator = (1+√2)*(2+√2)

= 2+√2+2√2+2= 4+3√2

deniminator = (2-√2)(2+√2)

= 4+2√2-2√2-2

= 2

numerator/denominator

=4+3√2/2