Question

Factorise the following-: 2y²+y-45​

Answer 1

Answer:

=2y²+y-45

=2y²+(10-9)y-45

=2y²+10y-9y-45

=2y(y+5)-9(y+5)

=(y+5)(2y-9)

Answer 2

2y²+y-45=0

2y²+10y-9y-45=0

2y(y+5)-9(y+5)=0

(y+5)(2y-9)=0

2y-9=0;y+5=0

2y=9;y=-5

y=9/2;y=-5