2x+2y=2(x+y) , ax-ay=a(x-y) , 6a+12=6(a+2) , 7ab+14ac7a(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(2a+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)