quadratic formula: x equals negative b plus or minus the square root of b squared minus 4 ac all over 2a a=2 b=5 c=1 x=(-5+/5^2-4(2)(1))/2(2) -5+/25-8/4 -5+/17/4 (-5+4.12)/4 -0.877/4 -0.219 x=(-5-/5^2-4(2)(1))/2(2) -5-/25-8/4 -5-/17/4 (-5-4.12)/4 -9.12/4 -2.28