Factorise: x2+y−xy−x
x2+y−xy−x = x2−xy−x+y=x(x–y)–1(x–y)=(x–y)(x–1)
Factorise: x2+x−132
Factorise: x2+6x+9−x−3
What are the common factors of 3x3y, 5xy2 and 15xy?