ГДЗ Алгебра 8 клас Мерзляк (2025)

Скоротіть дріб:

1) (a(x+2))/(b(x+2)) = a/b;
2) (4(a-6)^2)/((a-6)^2 ) = 4/1 = 4;
3) (c^3 (c-4)^5)/(c^6 (c-4)^3 ) = ((c-4)^2)/c^3 ;
4) (2a+2b)/(7(a+b)) = (2(a+b))/(7(a+b)) = 2/7;
5) (7x-21y)/(5x-15y) = (7(x-3y))/(5(x-3y)) = 7/5;
6) (4a-20b)/12ab = (4(a-5b))/12ab = (a-5b)/3ab;
7) (6x+12)/6x = (6(x+2))/6x = (x+2)/x;
8) (a-5b)/(a^2- 5ab) = (a-5b)/(a(a-5b)) = 1/a;
9) (y^2- 25)/(10+2y) = ((y-5)(y+5))/(2(5+y)) = (y-5)/2;
10) (a^2+ 4a+4)/(9a+18) = ((a+2)^2)/(9(a+2)) = ((a+2)(a+2))/(9(a+2)) = (a+2)/9;
11) (c^2- 6c+9)/(c^2- 9) = ((c-3)^2)/((c-3)(c+3)) = ((c-3)(c-3))/((c-3)(c+3)) = (c-3)/(c+3);
12) (m^3+ 1)/(m^2- m+1) = ((m+1)(m^2- m+1))/(m^2- m+1) = m + 1.