Question

if 212=687 then 40=?​

Answer 1

Answer:

40=515 is the answer if it is not correct please send the answer

Answer 2

Answer:

Question:-

1 + √2 / 3 + 2√2

Answer:-

1 + √2 / 3 + 2√2

Rationalising factor of 3 + 2√2 is 3 - 2√2

Multiply 3 - 2√2 with numerator and denominator.

1 + √2 * 3 - 2√2 / 3 + 2√2 * 3 - 2√2

1 (3 - 2√2) + √2 (3 - 2√2) / 3 ( 3 - 2√2 ) + 2√2 ( 3 - 2√2)

3 - 2√2 + 3√2 - 4 / 9 - 6√2 + 6√2 - 8

Rearranging the terms in numerator and denominator

3 - 4 + 3√2 - 2√2 / 9 - 8 + 6√2 - 6√2

3 - 8 = - 1 and + 3√2 - 2√2 = √2 and 9 - 8 = 1 and + 6√2 - 6√2 = 0

- 1 + √2 / 1

- 1 + √2

Conclusion:-

Therefore, 1 + √2 / 3 + 2√2 = - 1 + √2.