Question

2x - 12x + 6 = x(x+4)

Answer 1

2x-12x+6=x(x+4)
-10x+6=x²+4x
-10x+6-x²-4x=0
-14x+6-x²=0
-x²-14x+6=0
-1.(-x²)-1.(-14)x-1.6=1.0
x²+14x-6=0
x=-14+-√(14²-4.1.(-6)) / 2.1
x=-14+-√(196+24) / 2
X1=-7-√55
X2=-7+√55