Question

y²-7y+10 factorise the following

Answer 1

Heya !!!

y²-7y+10=0
y²-2y-5y+10=0
y(y-2)-5(y-2)=0
(y-5)(y-2)=0
(y-5)=0 or (y-2)=0
y=5 or y=2

Answer 2

y²-7y+10
= y²-5y+2y+10
= y(y-5)+2(y-5)
= (y+2) (y-5)