Question

fatore ax + by + ay + bx

Answer 1

ax + ay + bx + by =

a. ( x + y ) + b . ( x + y )=

( x + y ) . ( a + b ) 

Answer 2

$ax + by + ay + bx$

$a ( x + y ) + b ( x + y )$

$(x + y) (a + b)$