What is X2 plus 8x-48 equals 0?

Answer 1

That would be a quadratic equation which can be factored out to (x + 12)(x - 4) = 0, telling us that x is equal to -12 or 4. If you're having a hard time finding the factors, another way to find the answers is to complete the square and solve for x:

x2 + 8x - 48 = 0

x2 + 8x + 16 = 64

(x + 4)2 = 64

x + 4 = √64

x = -4 ± 8

x ∈ {-12, 4}