Question

Add using column method..

x² - y² - 1, y² - 1 - x and 1 - x² - y²

Please answer correctly, it's very important...​

Answer 1

Answer:

x^2-y^2-1+y^2-1-x+1-x^2-y^2

=-y^2-1-

Stay home and stay safe:-)

Answer 2

Answer:

thank you for 10 thanks

good evening