Question

Factorise by factor theorem y^2-2y-15

Answer 1

Answer:

(y-5) (y+3)

Step-by-step explanation:

y^2 - 2y - 15

y^2 - (5-3)y - 15

y^2 - 5y + 3y -15

y(y-5) + 3(y-5)

(y-5) (y+3)