Question

Factorise y²+5y-6 what is it fast

Answer 1

y²+5y-6           product = -6( 6 x -1)

                       sum= 5 (6-1)

y²+(6-1)y-6

y²+6y-y-6

y(y+6)-1(y+6)

(y-1)(y+6)