Question

If x=√2 and y=1-√2 find the value of x2+y2

Answer 1

Answer:

√3

Step-by-step explanation:

Answer 2

Answer:

$\sf x =  \sqrt{2} \\ \\ \sf \: x {}^{2} =2 \\ \\ \sf \: similarly,  {y}^{2} = \frac{1}{2} \\ \\ \sf \: x {}^{2} −y {}^{2} = \red{ \dfrac{2}{3}}$