list two factors whose product is -42 and has a sum of 1

Answer 1

xy =-42, x+y = 1 y=1-x

x(1-x) = -42

x-x^2 = -42

x^2 -x-42 = 0

(x-7)(x+6) = 0

x=-6 or 7

y=7 or -6

the two factors or (-6)(7) = -42, -6+7 = 1