Let, the numbers = a, b
Then, a + b = 7
& a * b = -8
Substitute the value of a from Equation (1) into (2),
(7-b) * b = -8
7b - b² = -8
b² - 7b - 8 = 0
b² + b - 8b - 8 = 0
b(b + 1) -8(b + 1) = 0
(b + 1)(b - 8) = 0
b = -1 OR 8
In short, Your Numbers would be: -1 & 8
Hope this helps!
