What 2 numbers multiply to -63 and add up to 7

2 numbers multiply to -63 and add up to 7
Forming the equation, we need to let
x = first number
y = second number

xy = -63
x+y = 7 --> y = -x + 7

x (-x + 7) = 63
-x^2 +7x = 63
x^2 - 7x = -63
x^2 - 7x + 63 = 0

From the equation above, you need to find the roots.
After getting the roots, then you can decide that those are the two numbers.

The pie is multyplued by the second step