factorise: y^2 -2y- 15
Answers
Answered by
105
y²-2y-15
y²-5y+3y-15
y(y-5)+3(y-5)
(y+3)(y-5)
factors are
(y+3)
and
(y-5)
y²-5y+3y-15
y(y-5)+3(y-5)
(y+3)(y-5)
factors are
(y+3)
and
(y-5)
Answered by
22
y2- 2y -15 =y2- 5y +3y -15=y(y -5)+3(y-5)=(y+3) (y-5)
Similar questions