Question

two numbers when added you get -10 and when multiplied you get 9​

Answer 1

Answer:

Step-by-step explanation:

let the numbers be x and -10-x

x(-10-x)=9

-x^2-10x=9

x^2+10x+9=0

x^2 +9x+x+9=0

x(x+9)+1(x+9)=0

either x= -9 or x=-1

when x=-9, -10-x= -1

when x=-1, -10-x= -9