FInd 1/(a - 1) + 1/(b - 1) if a and b are the roots of the equation 2x^2 - 7x + 2 = 11x - 15.
Here is one way....I do not know if it is the BEST way:
2x^2 -18x+17 = 0 quadratic formula says roots are 9/2 +- sqrt (47)/2 can you take it from here ?