Whats the two integers whose sum is -1 and product is -42?

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 numbers are 6 and -7