Posted by
alex on
.
(9a^3b^412a^2b^5+6ab^7)/(6a^2b^3)

Algebra 
Bosnian,
( 9 a ^ 3 b ^ 4  12 a ^ 2 b ^ 5 + 6 a b ^ 7) / ( 6 a ^ 2 b ^3 ) =
3 * a * b ^ 3 * ( 3 a ^ 2 * b  4 a * b ^ 2 + 2 b ^ 4 ) / [ 3 * a * b ^ 3 * ( 2 a ) ] =
( 3 a ^ 2 b  4 a b ^ 2 + 2 b ^ 4 ) / 20

Algebra 
Bosnian,
Sorry last row :
= ( 3 a ^ 2 b  4 a b ^ 2 + 2 b ^ 4 ) / 2 a