Question 250172
6x^2+7x-20
what are factors of 6=3,2 or 6,1
what are factors of 20=5,4 or 10,2 or 20,1
arrange such that outer and inner add up to +7 [15(3*5) and  -8 2*(-4)]
one  must be minus to get -20
(2 x+5) (3 x-4)
foil
6x^2
-8x
15x
-20