Question

x+y= -47and xy=-378 find x=?

Answer 1

Here is ur answer!!

➡️ x + y = -47
➡️ y = -47 - x

⏩ Subtituting for xy = -378

⬇️⬇️⬇️
x(-47-x) = -378
-47x - x² = -378
x² + 47x - 378 = 0
(x + 54) (x - 7) = 0
x = -54 or x = 7 ✔️

May be usefull ^_^