Question

factorise each of the following expression: y^2+5y-36

Answer 1

Step-by-step explanation:

y^2+5y-36

Now

36 = 6×6

36 = 12×3

36 = 4×9 (9-4=5,& 5 is our middle term)

So,

=y^2+ 9y - 4y- 36

=y(y+9) - 4(y+9)

=(y-4) (y+9)

y = 9 & -4