Question

${( \sqrt{2} + 1) }^{2} - { (\sqrt{2} - 1)}^{2}$
What is the answer​

Answer 1

= ( 2 + 1 ) - ( 2 - 1 )

= 3 - 1

= 2

Is the right answer

Answer 2

Step-by-step explanation:

your answer is in attachment box