Question

What adds to -4 but multiplies to 12

Answer 1

Explanation:

What multiplication adds up to 12?

Example: All the factors of 12

2 × 6 = 12, but also 3 × 4 = 12, and of course 1 × 12 = 12.

Answer 2

Explanation:

x+y = -4 or y = -4-x

xy = 12

x (-4-x) = 12

-x^2 - 4x -12 = 0

Use quadratic formula with a = -1 b = -4 c = -12 to find

x = -2-2 sqrt 2 i y = -2 + 2 sqrt 2 i