The quadratic formula is (-b+-sqrt(b^2-4ac))/(2a) In your equation, A=2 B=-10 C=7 Plugging these in we get (10+-sqrt(100-4(2)(7)))/(2*2) =(10+-sqrt(44))/4 =(10+-6.633)/4 =16.633/4 or -3.366/4 =4.158 or -0.841
Final Answer: x=4.158 or x=-0.841 Hope I helped :)
