Question

Factorise the following : t^2 - 2t + 1

Answer 1

t^2 - 2t + 1

split the middle term

t^2 - (t + t) + 1 = 0

t^2 - t - t + 1 = 0

t(t - 1) - 1(t - 1) = 0

(t - 1) (t - 1) = 0

t = 1