A) 11f+9/f= (11f²+9)/f
b) ... =5/q-(5q)/1= (5-5q²)/q
в) ...= 7b - (14b²)/b-3= (7b²-21b-14b²)/ b-3= (-7b²-21b)/ b-3= (-7b(b-3))/b-3=
= -7b
г) 132t/(11-t) -12t= (132t-132t-12t²) / 11-t= - 12t²/ 11-t
д) 55 h²/5h-9 - 11h -9= (55h²-55h²+99h-45h+81) / 5h-9=
=( 54h+81 )/ 5h-9 больше не успею
Для последнего номера
= ( 21g^2 - 21g +35 -21g -14g^2+35g-35) / 7g-7= (7g^2-7g) / 7g-7=( 7g^2-7g) / 7g-7=
=(7g(g-1)) / 7(g-1) =g вот и всё