Скоротіть дроби 1) t2-4 2) 25- x2 3) 6xm+18m -; -; -; 2t+4 2x+10 9-x2 4) 3x2-15xy 5) a3-16a 6) t2-9t — - x2-25y2 a2+4a 81t-t3

1) (t^2-4) \ (2t+4)=(t-2) (t+2) \ (2 (t+2)=(t-2) \ 22) (25-x^2) \ (2x+10)=(5-x) (5+x) \ (2*(x+5)=(5-x) \23) (6xm+18m) \ (9-x^2)=6m (x+3) \ (3-x)*(3+x)=6m\ (3-x) 4) (3x^2-15xy) \ (x^2-25^y^2)=3x (x-5y) \ (x-5y)*(x+5y)=3x\ (x+5y) 5) (a^3-16a) \ (a^2+4a)=a*(a-4) (a+4) \ (a*(a+4)=a-46) (t^2-9t) \ (81t-t^3)=t (t-9) \ (t*(9-t)*(9+t)=-1\ (9+t)