Question

Simplify: (x² + y2 - 2)2 - ( x² - y2 + 2)2​

Answer 1

Step-by-step explanation:

$( {x}^{2} + {y}^{2} - 2)2 - ( {x}^{2} - {y}^{2} + 2)2$

$2( {x}^{2} + {y}^{2} - 2) - 2( {x}^{2} - {y}^{2} + 2)$

$(2 {x}^{2} + 2 {y}^{2} - 4) - (2 {x}^{2} - 2 {y}^{2} + 4)$

$2 {x}^{2} + 2{y}^{2} - 4 - 2 {x}^{2} - 2 {y}^{2} + 4$

$(2 {x}^{2} - 2 {x}^{2} ) + (2 {y}^{2} - 2 {y}^{2} ) - (4 + 4)$

$- 8$

Answer 2

Answer:

answer is in attachment above