Question

plz answer fast I'll mark the first answer as the brainliest​

Answer 1

Answer:

$x = ( \sqrt{2} + 1) \div ( \sqrt{2} - 1) \\ {x}^{2} = {( \sqrt{2} + 1)}^{2} \div {( \sqrt{2} - 1) }^{2} \\ =( 2 + 1 + 2 \sqrt{2}) \div (2 + 1 - 2 \sqrt{2}) \\ {x}^{2} = (3 + 2 \sqrt{2}) \div (3 - 2 \sqrt{2} )$