Factorise: (a2-2a)2 -23(a2-2a)+120

  • 0

Let (a2-2a) be x

A.T.P

x2-23x+120

x2-8x-15x+120

x(x-8)-15(x-8)

(x-8)(x-15)

Putting the values of x

(a2-2a-8)(a2-2a-15)

  • 1
What are you looking for?