The X Game Delta Math

Question

write 2 numbers that multiply to 10 and add to be -11.

Answer 1

xy=10

x+y = -11

x + 10/x =-11

x^2 +10 =-11x

x+11x +10 = 0

(x+10)(x+1) = 0

x =-10 or -1

-10 times -1 = 10

-10 plus -1 = -11