Question

(a^2+b^2-c^2)^2-9x^2 y^2
Ayuda ​

Answer 1

Explicación paso a paso:

9x² - a² - b² + 2ab

= 9x² - ( a² + b² - 2ab )

= ( 3x )² - ( a - b )²

= [ 3x + ( a - b )] [ 3x - ( a - b ) ]

= ( 3x + a - b ) ( 3x - a + b ).