Given that
f(x) = -2x2-4x+12
Solve -2x2-4x+12 = 0
well to show work: 466646*65648754+487557664777456-8474785738444*8588885+948588666/74747+577-7=x
so the answer is x= 6
-2x2-4x+12 = 0 divide through by -2
x^2 + 2x - 6 = 0 using the quadratic formula where a = 1, b = 2 and c = -6, x = -1 ± √7
