Using the quadratic formula to solve 2 x squared is equal to 4 x minus 7 , what are the values of x ?
A
1 plus or minus square root of 5 iB
2 plus or minus square root of 10 iC
1 plus or minus square root of 10 iD
the fraction with numerator 2 plus or minus square root of 10 i and denominator 2