10b - 30b²
2x² - 3xy - 4x + 6y
m² + 2m + 1
4x² + 25y² - 20xy
x(a+b) + m(a+b)
(m+n)² - 2(a-m) (m+n) + (a-m)²
ax - ay + az + x - y + z
a² + 2a
a²x - ax² - 2a²y + 2axy + x³ - 2x²y
2x(a-1) - y (a-1)
10b(1-3ab)
a(a+2)
(2m+n-a)²
(2x-5y)²
(m+1)²
(a+1) (x-y+z)
(x-2) (2x-3y)
(a+b) (x+m)
(a²-ax+x²) (x-2y)
(a-1) (2x-y)
