Question 1029733
Let's call the numbers x and y.  Then we can write
xy = -9  and x + y = -10
Solve the second one for y and substitute into the first one...we get
y = -x - 10
x(-x - 10) = -9
-x^2 - 10x = -9
x^2 + 10x = 9
x^2 + 10x - 9 = 0
This cannot be factored so we must solve using the quadratic formula...
{{{x = (-10 + sqrt(100 + 36))/2}}}
and
{{{x = (-10 - sqrt(100 + 36))/2}}}
Simplify and then find y...
I suspect there is a mistake in the problem...