2x+2y=2(x+y),

ax-ay=a(x-y),

6a+12=6(a+2),

7ab+14ac=7a(b+2c),

5m-5n=5(m-n),

mn+n=n(m+1),

4x-8=4(x-2),

5mn-5m=5m(n-1),

10p-5q=5(2p-q),

cd-bc=c(d-b),

5-15y=5(1-3y),

4ax+8a=4a(x+2),

12c+8b=4(3c+2b),

ab+b=b(a+1),

10+5b=5(2+b),

6ab-3bc=3b(2a-c),

15l-9k=3(5l-3k),

mx-m=m(x-1),

3-3c=3(1-c),

-15ax-20ay=5a(-3x-4y),

6a+9b=3(a+3b),

-2a-5at=a(-2-5t),

2+6d=2(1+3d),

-2mn-4n=2n(-m-2),

8ax+6ay=2a(4x+3y),

a²-ab=a(a-b),

ab+b²=b(a+b),

mn-n²=n(m-n)

x⁴-x²=x²(x²-1),

c⁵+c³=c³(c²+1),

y³-y⁴=y³(1-y),

a⁷+a⁵=a⁵(a²+1)

a²b²+b⁴=b²(a²+b²),

a⁶-a³b⁴=a³(a³-b⁴),

b⁵+a⁴b³=b³(b²+a⁴),

ax⁵+x⁶=x⁵(a+x)

m³n⁷-n⁴k²=n⁴(m³n³-k²),

3x²-6x³=3x²(1-2x),

15a³+5a²=5a²(3a+1),

9m⁴-6m³=3m³(3m-2)

7y⁵+21y³=7y³(y²+3),

6z⁴-12z⁶=6z⁴(1-2z²),

x²y-xy²=xy(x-y),

a³b²+a²b⁵=a²b²(a+b³)

9a⁴-6a²b=3a²(3a²-2b),

10ab³-15b⁵=5b³(2a-3b²),

12a⁶x⁴-4a³x⁵=4a³x⁴(3a³-x),

8m²n³+10mn²=2mn²(4mn+5)